def print_alpha_nums(abc_list, num_list):
for i in abc_list:
for j in num_list:
print(i, j)
print_alpha_nums(["a","b","c"], [1,2,3])
>>>
a 1
a 2
a 3
b 1
b 2
b 3
c 1
c 2
c 3
>>>
a 1
a 2
a 3
b 1
b 2
b 3
c 1
c 2
c 3