C222123232321333131133133313331323133313232211212123313132113121   >>    C22212323232133313113313331333132313331323221121212331313211312   <<    C222123232321333131133133313331323133313232211212123313132113123   >>      C222123232321333131133133313331323133313232211212123313132113122   >>