Join with 'map lc'

    

print join(", ", (map lc, A, B, C));

1.	Join strings
2.	Takes its input and joins it into a single string.
3.	Join the mapped value
4.	Join the result of the split function
5.	Join variables
6.	Join with
7.	Join with 'map chr'
8.	Joining string with empty string

Join with 'map lc' : join « String « Perl