Table and Column

I have created a new table called 'B' using a table called 'A'. My question is, how do I create three new columns in table B and populate them with data from table A? Your help would be greatly appreciated. Thank you in advance. (See example below)

Ex.tables--- A ------------ B columns a, a1, a2... b , b1, b2... c, c1, c2... x, y, z, a b c a1 b1 c1 a2 b2 c2 . . . a8 b8 c8 Put all of the data from a...a8 into column x line by line Put all of the data from b..b8. into column y line by line Put all of the data from c...c8 into column z line by line