C313212111133131211331333133313331333133313231333133313331333133313122123231321   >>    C31321211113313121133133313331333133313331323133313331333133313331312212323132   <<    C313212111133131211331333133313331333133313231333133313331333133313122123231323   >>      C313212111133131211331333133313331333133313231333133313331333133313122123231322   >>