C31232233133313221211113313331333133313331212111133131211111113233231   >>    C3123223313331322121111331333133313331333121211113313121111111323323   <<    C31232233133313221211113313331333133313331212111133131211111113233233   >>      C31232233133313221211113313331333133313331212111133131211111113233232   >>