B231123233313231323132233133313233313232233132313231333131231211
>>
B23112323331323132313223313331323331323223313231323133313123121
<<
B231123233313231323132233133313233313232233132313231333131231213
>>
B231123233313231323132233133313233313232233132313231333131231212
>>