C1111233131211111211113313331333133313331313221131211113311211132231   >>    C111123313121111121111331333133313331333131322113121111331121113223   <<    C1111233131211111211113313331333133313331313221131211113311211132233   >>      C1111233131211111211113313331333133313331313221131211113311211132232   >>