C222123232321333131133133313331323133313231322132313121212221211   >>    C22212323232133313113313331333132313331323132213231312121222121   <<    C222123232321333131133133313331323133313231322132313121212221213   >>      C222123232321333131133133313331323133313231322132313121212221212   >>