C313212111133131211331333133313331211113313113321133133313223313113313223221   >>    C31321211113313121133133313331333121111331311332113313331322331311331322322   <<    C313212111133131211331333133313331211113313113321133133313223313113313223223   >>      C313212111133131211331333133313331211113313113321133133313223313113313223222   >>