B331133131323131133132233133313231323132333133313112331323133313221212121
>>
B33113313132313113313223313331323132313233313331311233132313331322121212
<<
B331133131323131133132233133313231323132333133313112331323133313221212123
>>
B331133131323131133132233133313231323132333133313112331323133313221212122
>>