C1111233131211111211113313331333133313331313221131211111322333121121   >>    C111123313121111121111331333133313331333131322113121111132233312112   <<    C1111233131211111211113313331333133313331313221131211111322333121123   >>      C1111233131211111211113313331333133313331313221131211111322333121122   >>