Well we could always go directly to the bible that way we can definitely be sure, because we can't change what the bible says reguarding the tribes.
Check this out: Numbers 1:19-50
19 As the LORD commanded Moses, so he numbered them in the wilderness of Sinai.
20 And the children of Reuben, Israel's eldest son, by their generations, after their families, by the house of their fathers, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war;
21 Those that were numbered of them, even of the tribe of Reuben, were forty and six thousand and five hundred.
22 Of the children of Simeon, by their generations, after their families, by the house of their fathers, those that were numbered of them, according to the number of the names, by their polls, every male from twenty years old and upward, all that were able to go forth to war;
23 Those that were numbered of them, even of the tribe of Simeon, were fifty and nine thousand and three hundred.
24 Of the children of Gad, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
25 Those that were numbered of them, even of the tribe of Gad, were forty and five thousand six hundred and fifty.
26 Of the children of Judah, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
27 Those that were numbered of them, even of the tribe of Judah, were threescore and fourteen thousand and six hundred.
28 Of the children of Issachar, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
29 Those that were numbered of them, even of the tribe of Issachar, were fifty and four thousand and four hundred.
30 Of the children of Zebulun, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
31 Those that were numbered of them, even of the tribe of Zebulun, were fifty and seven thousand and four hundred.
32 Of the children of Joseph, namely, of the children of Ephraim, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
33 Those that were numbered of them, even of the tribe of Ephraim, were forty thousand and five hundred.
34 Of the children of Manasseh, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
35 Those that were numbered of them, even of the tribe of Manasseh, were thirty and two thousand and two hundred.
36 Of the children of Benjamin, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
37 Those that were numbered of them, even of the tribe of Benjamin, were thirty and five thousand and four hundred.
38 Of the children of Dan, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
39 Those that were numbered of them, even of the tribe of Dan, were threescore and two thousand and seven hundred.
40 Of the children of Asher, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
41 Those that were numbered of them, even of the tribe of Asher, were forty and one thousand and five hundred.
42 Of the children of Naphtali, throughout their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
43 Those that were numbered of them, even of the tribe of Naphtali, were fifty and three thousand and four hundred.
44 These are those that were numbered, which Moses and Aaron numbered, and the princes of Israel, being twelve men: each one was for the house of his fathers.
45 So were all those that were numbered of the children of Israel, by the house of their fathers, from twenty years old and upward, all that were able to go forth to war in Israel;
46 Even all they that were numbered were six hundred thousand and three thousand and five hundred and fifty.
47 But the Levites after the tribe of their fathers were not numbered among them.
48 For the LORD had spoken unto Moses, saying,
49 Only thou shalt not number the tribe of Levi, neither take the sum of them among the children of Israel:
50 But thou shalt appoint the Levites over the tabernacle of testimony, and over all the vessels thereof, and over all things that belong to it: they shall bear the tabernacle, and all the vessels thereof; and they shall minister unto it, and shall encamp round about the tabernacle.
And this earlier:
Gen. 49:1-28
1 And Jacob called unto his sons, and said, Gather yourselves together, that I may tell you that which shall befall you in the last days.
2 Gather yourselves together, and hear, ye sons of Jacob; and hearken unto Israel your father.
3 Reuben, thou art my firstborn, my might, and the beginning of my strength, the excellency of dignity, and the excellency of power:
4 Unstable as water, thou shalt not excel; because thou wentest up to thy father's bed; then defiledst thou it: he went up to my couch.
5 Simeon and Levi are brethren; instruments of cruelty are in their habitations.
6 O my soul, come not thou into their secret; unto their assembly, mine honour, be not thou united: for in their anger they slew a man, and in their selfwill they digged down a wall.
7 Cursed be their anger, for it was fierce; and their wrath, for it was cruel: I will divide them in Jacob, and scatter them in Israel.
8 Judah, thou art he whom thy brethren shall praise: thy hand shall be in the neck of thine enemies; thy father's children shall bow down before thee.
9 Judah is a lion's whelp: from the prey, my son, thou art gone up: he stooped down, he couched as a lion, and as an old lion; who shall rouse him up?
10 The sceptre shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come; and unto him shall the gathering of the people be.
11 Binding his foal unto the vine, and his ***'s colt unto the choice vine; he washed his garments in wine, and his clothes in the blood of grapes:
12 His eyes shall be red with wine, and his teeth white with milk.
13 Zebulun shall dwell at the haven of the sea; and he shall be for an haven of ships; and his border shall be unto Zidon.
14 Issachar is a strong *** couching down between two burdens:
15 And he saw that rest was good, and the land that it was pleasant; and bowed his shoulder to bear, and became a servant unto tribute.
16 Dan shall judge his people, as one of the tribes of Israel.
17 Dan shall be a serpent by the way, an adder in the path, that biteth the horse heels, so that his rider shall fall backward.
18 I have waited for thy salvation, O LORD.
19 Gad, a troop shall overcome him: but he shall overcome at the last.
20 Out of Asher his bread shall be fat, and he shall yield royal dainties.
21 Naphtali is a hind let loose: he giveth goodly words.
22 Joseph is a fruitful bough, even a fruitful bough by a well; whose branches run over the wall:
23 The archers have sorely grieved him, and shot at him, and hated him:
24 But his bow abode in strength, and the arms of his hands were made strong by the hands of the mighty God of Jacob; (from thence is the shepherd, the stone of Israel
25 Even by the God of thy father, who shall help thee; and by the Almighty, who shall bless thee with blessings of heaven above, blessings of the deep that lieth under, blessings of the breasts, and of the womb:
26 The blessings of thy father have prevailed above the blessings of my progenitors unto the utmost bound of the everlasting hills: they shall be on the head of Joseph, and on the crown of the head of him that was separate from his brethren.
27 Benjamin shall ravin as a wolf: in the morning he shall devour the prey, and at night he shall divide the spoil.
28 All these are the twelve tribes of Israel: and this is it that their father spake unto them, and blessed them; every one according to his blessing he blessed them.
And then: Gen. 48:1-5 reguarding Ephraim and Manessah.
1 And it came to pass after these things, that one told Joseph, Behold, thy father is sick: and he took with him his two sons, Manasseh and Ephraim.
2 And one told Jacob, and said, Behold, thy son Joseph cometh unto thee: and Israel strengthened himself, and sat upon the bed.
3 And Jacob said unto Joseph, God Almighty appeared unto me at Luz in the land of Canaan, and blessed me,
4 And said unto me, Behold, I will make thee fruitful, and multiply thee, and I will make of thee a multitude of people; and will give this land to thy seed after thee for an everlasting possession.
5 And now thy two sons, Ephraim and Manasseh, which were born unto thee in the land of Egypt before I came unto thee into Egypt, are mine; as Reuben and Simeon, they shall be mine.
6 And thy issue, which thou begettest after them, shall be thine, and shall be called after the name of their brethren in their inheritance.
So in any event, it's obvious the 12 tribes encompass all of Jacobs sons including Levi, but Joseph and Levi's land were given to Ephraim and Manasseh. I just wanted to point out though just because someone isn't allocated land, it doesn't mean they aren't part of the tribes. It simply means they have a different blessing..such as the Levites being the priests..
Also check out this:
Numbers 1:47 "But the Levites after the tribe of their fathers were not numbered among them."
So obviously someone took their accounting..which again the bible seems to point right to Ephraim and Manasseh, Joseph's sons.
Missy