C111123313121111121111331333133313331333131233133313121111331221221211   >>    C11112331312111112111133133313331333133313123313331312111133122122121   <<    C111123313121111121111331333133313331333131233133313121111331221221213   >>      C111123313121111121111331333133313331333131233133313121111331221221212   >>