C2122121212121133132213231313231323131323223313231322331323222111   >>    C212212121212113313221323131323132313132322331323132233132322211   <<    C2122121212121133132213231313231323131323223313231322331323222113   >>      C2122121212121133132213231313231323131323223313231322331323222112   >>