C21221212121211331322132313132313231323223313211232313331322231   >>    C2122121212121133132213231313231323132322331321123231333132223   <<    C21221212121211331322132313132313231323223313211232313331322233   >>      C21221212121211331322132313132313231323223313211232313331322232   >>