General object descriptions (virtual and lexical)

Verb:
 <>               == 0
 <verb surf root> == "<surf root>"
 <surf root>      == 0
 <surf>           == "<subject surf>" '\#'
                     "<verb surf root>" +
                      <morph suffix <agr>> '\#'
                     "<object surf>"
 <agr>    == "<subject pers>" "<subject num>"
 <morph suffix third sing>  == s
 <morph suffix>             == 0 .

Noun:
 <>                     ==
 <surf root>            == 0
 <pers>                 == third
 <surf>                 == "<surf root>" +
                            <morph suffix <agr>>
 <agr>                  == "<num>"
 <morph suffix plur>    == s
 <morph suffix>         == 0 .