C313212111133131211331333133313331333133112323133313232233131123311211   >>    C31321211113313121133133313331333133313311232313331323223313112331121   <<    C313212111133131211331333133313331333133112323133313232233131123311213   >>      C313212111133131211331333133313331333133112323133313232233131123311212   >>