C111123313121111121111331333133313331312111113331333133313331333133313221213131   >>    C11112331312111112111133133313331333131211111333133313331333133313331322121313   <<    C111123313121111121111331333133313331312111113331333133313331333133313221213133   >>      C111123313121111121111331333133313331312111113331333133313331333133313221213132   >>