THE TWELFTH GENERATON:​
The sons of Japheth:
Gomer, Magog, Madai, Javan, Tubal, Meshech, and Tiras.  (Genesis 10:2)

The sons of Ham:
Cush, Mizraim, Phut, and Canaan.  (Genesis 10:6)

The children of Shem:
Elam, Asshur, Arphaxad, Lud, and Aram.  (Genesis 10:21-22)
Arphaxad was born 2 years after the flood; Shem was 100 years old at the time.  (Genesis 11:10)
Shem lived 500 years after Arphaxad was born and begat sons and daughters.  (Genesis 11:11)
Arphaxad was born in the 1668th year of the earth.  ​(Genesis 1:24-31, 5:3,6,9,12,15,18,21,25,28, 7:6,11, 9:28, 29)