B3311331313231311331322331333131133132333132333133313223313231323223332211
  >>
   B331133131323131133132233133313113313233313233313331322331323132322333221
  <<
   B3311331313231311331322331333131133132333132333133313223313231323223332213
  >>
 
 
 B3311331313231311331322331333131133132333132333133313223313231323223332212
  >>