Write a program that reads in two whitespace separated strings from stdin. First your program should output the two strings it read in. Then, your program should output two letters from each string until there are no more letters in either input string. Neither input string will be longer than 10 characters.

Example input:

abcde 123456789

Correct Output:

String 1 = abcde

String 2 = 123456789

Mixed = ab12cd34e56789