C31232233133313221211113313331333133313331212111112111133232233313131   >>    C3123223313331322121111331333133313331333121211111211113323223331313   <<    C31232233133313221211113313331333133313331212111112111133232233313133   >>      C31232233133313221211113313331333133313331212111112111133232233313132   >>