C2122121212121133132213231313231323131323223313231322331331123222311   >>    C212212121212113313221323131323132313132322331323132233133112322231   <<    C2122121212121133132213231313231323131323223313231322331331123222313   >>      C2122121212121133132213231313231323131323223313231322331331123222312   >>