C2122121212121133132213231313231323131323223313231322331323131232312111   >>    C212212121212113313221323131323132313132322331323132233132313123231211   <<    C2122121212121133132213231313231323131323223313231322331323131232312113   >>      C2122121212121133132213231313231323131323223313231322331323131232312112   >>