Changing the likes of ' azz ' and ' daz ' to ' baa ' and ' dba ' respectively
while ( index >= 0 and t [ index ] == ' z ' ) : NEW_LINE INDENT t [ index ] = ' a ' NEW_LINE index -= 1 NEW_LINE DEDENT if ( index >= 0 ) : NEW_LINE INDENT t [ index ] = chr ( ord ( t [ index ] ) + 1 ) NEW_LINE DEDENT