C222123232321333131133133313331323133313231322132313121222221211   >>    C22212323232133313113313331333132313331323132213231312122222121   <<    C222123232321333131133133313331323133313231322132313121222221213   >>      C222123232321333131133133313331323133313231322132313121222221212   >>