C3213322333133313113313221211113313331333132322333232223211231211   >>    C321332233313331311331322121111331333133313232233323222321123121   <<    C3213322333133313113313221211113313331333132322333232223211231213   >>      C3213322333133313113313221211113313331333132322333232223211231212   >>