C313212111113331323312111133133313331333133313331333133313233313221232311   >>    C31321211111333132331211113313331333133313331333133313331323331322123231   <<    C313212111113331323312111133133313331333133313331333133313233313221232313   >>      C313212111113331323312111133133313331333133313331333133313233313221232312   >>