C111123313331323113313331333133313331323131211113313231311132333133313232212121
>>
C11112331333132311331333133313331333132313121111331323131113233313331323221212
<<
C111123313331323113313331333133313331323131211113313231311132333133313232212123
>>
C111123313331323113313331333133313331323131211113313231311132333133313232212122
>>