D1212121212131323223313233231323331313232233132323132322121
  >>
   D121212121213132322331323323132333131323223313232313232212
  <<
   D1212121212131323223313233231323331313232233132323132322123
  >>
 
 
 D1212121212131323223313233231323331313232233132323132322122
  >>