convert data horizontal to vertical

i have a data in columns and would like to convert into rows

e.g.
11 A B C D E F G H
22 1 2 3 4 5 6 7 8
33 2 3 4 5 6 7 8 9
44 3 4 5 6 7 8 9 0

and result should be
A 22 1
A 33 2
A 44 3
B 22 2
B 33 3
B 44 4
C 22 3
C 33 4
C 44 5
and so on ..

plz help