C313212111113331323312111133133313331333133313331333133313331333133313321211   >>    C31321211111333132331211113313331333133313331333133313331333133313331332121   <<    C313212111113331323312111133133313331333133313331333133313331333133313321213   >>      C313212111113331323312111133133313331333133313331333133313331333133313321212   >>