C313212111113331323312111133133313331333133313331333133313331331121111132313211   >>    C31321211111333132331211113313331333133313331333133313331333133112111113231321   <<    C313212111113331323312111133133313331333133313331333133313331331121111132313213   >>      C313212111113331323312111133133313331333133313331333133313331331121111132313212   >>