C22213331333133313112331323133313331333131111121111133313232211312121   >>    C2221333133313331311233132313331333133313111112111113331323221131212   <<    C22213331333133313112331323133313331333131111121111133313232211312123   >>      C22213331333133313112331323133313331333131111121111133313232211312122   >>