C111123313121111121111331333133313331311331323133313331211113313232211312131   >>    C11112331312111112111133133313331333131133132313331333121111331323221131213   <<    C111123313121111121111331333133313331311331323133313331211113313232211312133   >>      C111123313121111121111331333133313331311331323133313331211113313232211312132   >>