C111123313121111121111331333133313331311211312111133131133132212121
>>
C11112331312111112111133133313331333131121131211113313113313221212
<<
C111123313121111121111331333133313331311211312111133131133132212123
>>
C111123313121111121111331333133313331311211312111133131133132212122
>>