| # Grammars | |
| * List Prolog supports grammars, for example: | |
| * Grammars may be recursive (see test 9 in <a href="https://github.com/luciangreen/listprologinterpreter/blob/master/lpiverify4.pl">lpiverify4.pl</a>), i.e. they may repeat until triggering the base case: | |
| test(9,`[[n,grammar1],["aaa"]]`, | |
| [ | |
| `[[n,grammar1],[[v,s]],":-",[[[n,noun],[[v,s],""]]]]`, | |
| `[[n,noun],"->",[""]]`, | |
| `[[n,noun],"->",["a",[[n,noun]]]]` | |
| ], | |
| `[[]]`). | |