by Lemon Cheesecake » Wed Nov 02, 2016 7:51 pm
I am not quite sure where we are supposed to go from here?
1A
or AAA ?
edit: • Then reaching ' ZZ ', both 'z' will go back to 'a' then another 'a' will be added: ' AAA '
-- zz, aaa, aab, aac,...
-- aaz, aba, abb, abc,...
-- abz, aca, acb, acc,..