C313212111133131211331333133313331333133313331333133313331333132221223111   >>    C31321211113313121133133313331333133313331333133313331333133313222122311   <<    C313212111133131211331333133313331333133313331333133313331333132221223113   >>      C313212111133131211331333133313331333133313331333133313331333132221223112   >>