C111123313121111121111331333133313331333133313331333133313331311113313232231   >>    C11112331312111112111133133313331333133313331333133313331333131111331323223   <<    C111123313121111121111331333133313331333133313331333133313331311113313232233   >>      C111123313121111121111331333133313331333133313331333133313331311113313232232   >>