B23112323331323132313223313331323331323223313231323133313221121
  >>
   B2311232333132313231322331333132333132322331323132313331322112
  <<
   B23112323331323132313223313331323331323223313231323133313221123
  >>
 
 
 B23112323331323132313223313331323331323223313231323133313221122
  >>