code: public final String getAllTagsLemmasToCoNLL(final KAFDocument kaf) {
      final StringBuilder sb = new StringBuilder();
      final List<List<WF>> sentences = kaf.getSentences();
      for (final List<WF> wfs : sentences) {
  
        final List<ixa.kaflib.Span<WF>> tokenSpans = new ArrayList<ixa.kaflib.Span<WF>>();
        final String[] tokens = new String[wfs.size()];
        for (int i = 0; i < wfs.size(); i++) {
          tokens[i] = wfs.get(i).getForm();
          final List<WF> wfTarget = new ArrayList<WF>();
          wfTarget.add(wfs.get(i));
          tokenSpans.add(KAFDocument.newWFSpan(wfTarget));
        }
        
        String[][] allPosTags = this.posTagger.getAllPosTags(tokens);
        ListMultimap<String, String> morphMap = lemmatizer.getMultipleLemmas(tokens, allPosTags);
        for (int i = 0; i < tokens.length; i++) {
          List<String> posLemmaValues = morphMap.get(tokens[i]);
          if (this.dictLemmatizer != null) {
            dictLemmatizer.getAllPosLemmas(tokens[i], posLemmaValues);
          }
          String allPosLemmasSet = StringUtils.getSetStringFromList(posLemmaValues);
          sb.append(tokens[i]).append("\t").append(allPosLemmasSet).append("\n");
        }
        sb.append("\n");
      }
      return sb.toString();
    }
docs: Give all lemmas and tags possible for a sentence in conll tabulated format.
  @param kaf the NAF document
  @return the output in tabulated format