C22213331333133313112331323133313331333133313112331333133112111133133312112121   >>    C2221333133313331311233132313331333133313331311233133313311211113313331211212   <<    C22213331333133313112331323133313331333133313112331333133112111133133312112123   >>      C22213331333133313112331323133313331333133313112331333133112111133133312112122   >>