C111123313121111121111331333133313331323231333133313133313121111331333132332211   >>    C11112331312111112111133133313331333132323133313331313331312111133133313233221   <<    C111123313121111121111331333133313331323231333133313133313121111331333132332213   >>      C111123313121111121111331333133313331323231333133313133313121111331333132332212   >>