https://en.m.wikipedia.org/wiki/Head-driven_phrase_structure_grammar https://en.m.wikipedia.org/wiki/Head-driven_phrase_structure... That’s the best I can do,

https://en.m.wikipedia.org/wiki/Head-driven_phrase_structure_grammar https://en.m.wikipedia.org/wiki/Head-driven_phrase_structure... That’s the best I can do, sorry.