Grammar g = new Parser(grammarFile).parse();
assertTrue(!g.isCNF());
List<Grammar> steps = new ArrayList<Grammar>();
final String startSymbol = "AssignmentExpression";
Grammar gCNF = new CNFConverter().convertToCNF(g, startSymbol, steps);
CYKParser p = new CYKParser(gCNF);
String s = "typeof true";
List<ParseTree> parse = p.parse(s.split(" "), startSymbol);
for (ParseTree parseTree : parse){