herman simpleciphers]$ ./letFreq -S < patrick-henry.txt 
etarihsonldwcmuygbpfvkxzqj
[burt@sherman simpleciphers]$ cat patrick-henry.txt | ./substitution -e tomas | ./letFreq -S
srtpedqkjhwaumiycolbvxgzfn
[burt@sherman simpleciphers]$ ./selectKey etarihsonldwcmuygbpfvkxzqj srtpedqkjhwaumiycolbvxgzfn
touwsbcdenxhmjklfpqrivagyz
[burt@sherman simpleciphers]$ cat patrick-henry.txt | ./substitution -e tomas | ./substitution -d touwsbcdenxhmjklfpqrivagyz