C111123313121111121111331333133313331333133313121111133313331333132313221111   >>    C11112331312111112111133133313331333133313331312111113331333133313231322111   <<    C111123313121111121111331333133313331333133313121111133313331333132313221113   >>      C111123313121111121111331333133313331333133313121111133313331333132313221112   >>