C111123313121111121111331333133313331333133313331333133313331311113312131   >>    C11112331312111112111133133313331333133313331333133313331333131111331213   <<    C111123313121111121111331333133313331333133313331333133313331311113312133   >>      C111123313121111121111331333133313331333133313331333133313331311113312132   >>