code: public static Collection<List<String>> unorderedUntypedDependencyObjectify(Tree t, HeadFinder hf, TreeTransformer collinizer) {
      return dependencyObjectify(t, hf, collinizer, new UnorderedUntypedDependencyTyper(hf));
    }
docs: Returns a collection of unordered (but directed!) untyped word-word dependencies for the tree.