C22212323232133313113313331333132313331323133313331213132323131221221211221   >>    C2221232323213331311331333133313231333132313331333121313232313122122121122   <<    C22212323232133313113313331333132313331323133313331213132323131221221211223   >>      C22212323232133313113313331333132313331323133313331213132323131221221211222   >>