B331133131323131133132233133313233313231123313112331323133313231323132212121
>>
B33113313132313113313223313331323331323112331311233132313331323132313221212
<<
B331133131323131133132233133313233313231123313112331323133313231323132212123
>>
B331133131323131133132233133313233313231123313112331323133313231323132212122
>>