C2122121212121133132213231313231323131323223313231322331323232311   >>    C212212121212113313221323131323132313132322331323132233132323231   <<    C2122121212121133132213231313231323131323223313231322331323232313   >>      C2122121212121133132213231313231323131323223313231322331323232312   >>