C111123313121111121111331333133313331333133313331333133312111133132332221   >>    C11112331312111112111133133313331333133313331333133313331211113313233222   <<    C111123313121111121111331333133313331333133313331333133312111133132332223   >>      C111123313121111121111331333133313331333133313331333133312111133132332222   >>