C111123313121111121111331333133313331333133313331333133313331323311332211   >>    C11112331312111112111133133313331333133313331333133313331333132331133221   <<    C111123313121111121111331333133313331333133313331333133313331323311332213   >>      C111123313121111121111331333133313331333133313331333133313331323311332212   >>