C22212323232133313113313331333132313331323132213231312133322121   >>    C2221232323213331311331333133313231333132313221323131213332212   <<    C22212323232133313113313331333132313331323132213231312133322123   >>      C22212323232133313113313331333132313331323132213231312133322122   >>