C111123313121111121111331333133313331333112221211111133133313222233131
>>
C11112331312111112111133133313331333133311222121111113313331322223313
<<
C111123313121111121111331333133313331333112221211111133133313222233133
>>
C111123313121111121111331333133313331333112221211111133133313222233132
>>