(tree=
  B
.   ( B
    .   (R.(B.,,),algorithm,(B.,allows,))
      , and
      , (B.,can,)
    )
  , code
  , ( R
    .   ( B
        .   (B.(R.,directly,),easy,)
          , for
          , (B.(R.,is,),it,)
        )
      , read
      , ( B
        .   (B.,represent,)
          , terse
          , (R.(B.,the,),to,(B.,which,))
        )
    )
);