C313212111113331323312111133133313331333133313331333133313331333133312112211   >>    C31321211111333132331211113313331333133313331333133313331333133313331211221   <<    C313212111113331323312111133133313331333133313331333133313331333133312112213   >>      C313212111113331323312111133133313331333133313331333133313331333133312112212   >>