C2122121212121133132213231313231323131323223313231322331323221321211   >>    C212212121212113313221323131323132313132322331323132233132322132121   <<    C2122121212121133132213231313231323131323223313231322331323221321213   >>      C2122121212121133132213231313231323131323223313231322331323221321212   >>