B3311331313231311331322331333132313231323331333131333133313232212121221
  >>
   B331133131323131133132233133313231323132333133313133313331323221212122
  <<
   B3311331313231311331322331333132313231323331333131333133313232212121223
  >>
 
 
 B3311331313231311331322331333132313231323331333131333133313232212121222
  >>