C313212111113331323312111133133313331333133313331312111133133313232233132211   >>    C31321211111333132331211113313331333133313331333131211113313331323223313221   <<    C313212111113331323312111133133313331333133313331312111133133313232233132213   >>      C313212111113331323312111133133313331333133313331312111133133313232233132212   >>