C22213331333133313112331323133313331333133313233211113313232233223221   >>    C2221333133313331311233132313331333133313331323321111331323223322322   <<    C22213331333133313112331323133313331333133313233211113313232233223223   >>      C22213331333133313112331323133313331333133313233211113313232233223222   >>