C313212111133131211331333133313331333133313231333133313331333133313233232313131   >>    C31321211113313121133133313331333133313331323133313331333133313331323323231313   <<    C313212111133131211331333133313331333133313231333133313331333133313233232313133   >>      C313212111133131211331333133313331333133313231333133313331333133313233232313132   >>