C313212111133131211331333133313331333133312111133133313331333133313232233231321   >>    C31321211113313121133133313331333133313331211113313331333133313331323223323132   <<    C313212111133131211331333133313331333133312111133133313331333133313232233231323   >>      C313212111133131211331333133313331333133312111133133313331333133313232233231322   >>