Genesis 46:13

11The sons of Levi: Gershon, Kohath, and Merari.

12The sons of Judah: Er, Onan, Shelah, Perez, and Zerah; but Er and Onan died in the land of Canaan. The sons of Perez were Hezron and Hamul.

13The sons of Issachar: Tola, Puvah, Iob, and Shimron.

14The sons of Zebulun: Sered, Elon, and Jahleel.

15These are the sons of Leah, whom she bore to Jacob in Paddan Aram, with his daughter Dinah. All the souls of his sons and his daughters were thirty-three.