To toggle a key letter between 'a' and 'b' click on one of the blue symbols below.

Key Array:

(Yellow cells fixed by crib)

CODES:
A=aaaaa B=aaaab C=aaaba D=aaabb E=aabaa F=aabab G=aabba H=aabbb I/J=abaaa K=abaab L=ababa M=ababb N=abbaa
O=abbab P=abbba Q=abbbb R=baaaa S=baaab T=baaba U/V=baabb W=babaa X=babab Y=babba Z=babbb