C3213322333133313113313221211113313331333131131233232223222121221   >>    C321332233313331311331322121111331333133313113123323222322212122   <<    C3213322333133313113313221211113313331333131131233232223222121223   >>      C3213322333133313113313221211113313331333131131233232223222121222   >>