for (int i = 0; i < treeList.length(); i++) {
for (int i = 1; i < treeList.length(); i++) {
  public static Sexp removePreterms(SexpList words, Sexp tree, int wordIdx) {    if (Language.treebank().isPreterminal(tree))      return tree;    if (tree.isList()) {      SexpList treeList = tree.list();      for (int i = 0; i < treeList.length(); i++) {	Sexp currChild = treeList.get(i);	if (Language.treebank().isPreterminal(currChild)) {	  Word treeWord = Language.treebank().makeWord(currChild);	  if (treeWord.word() == words.get(wordIdx))	    wordIdx++;	  else	    treeList.remove(i--);	}	else	  removePreterms(words, currChild, wordIdx);      }    }    return tree;  }