B331133131323131133132233133313231323131313331333133313231323221212121
>>
B33113313132313113313223313331323132313131333133313331323132322121212
<<
B331133131323131133132233133313231323131313331333133313231323221212123
>>
B331133131323131133132233133313231323131313331333133313231323221212122
>>