C123211131133132233131323132313233313233313132313131323132313232212121
>>
C12321113113313223313132313231323331323331313231313132313231323221212
<<
C123211131133132233131323132313233313233313132313131323132313232212123
>>
C123211131133132233131323132313233313233313132313131323132313232212122
>>