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# 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]]]]` ], `[[]]`). |