C22213331333133313112331323133313331333133313331333132313121221   >>    C2221333133313331311233132313331333133313331333133313231312122   <<    C22213331333133313112331323133313331333133313331333132313121223   >>      C22213331333133313112331323133313331333133313331333132313121222   >>