C22212323232133313113313331333133313113313121223323222113322321   >>    C2221232323213331311331333133313331311331312122332322211332232   <<    C22212323232133313113313331333133313113313121223323222113322323   >>      C22212323232133313113313331333133313113313121223323222113322322   >>