C111123313331323113313331333133313231323133312111112111133222131
>>
C11112331333132311331333133313331323132313331211111211113322213
<<
C111123313331323113313331333133313231323133312111112111133222133
>>
C111123313331323113313331333133313231323133312111112111133222132
>>