static ItIt<S> wordRangesIterator(S s, O... _) {
  boolPar plusFull;
  LS tok = javaTokNPunctuationWithBrackets(s);
  ret nestedIterator(countIterator_exclusive_step(1, l(tok)-1, 2), from ->
    mapI(countIterator_exclusive_step(from+2, from == 1 && !plusFull ? l(tok)-2 : l(tok), 2), to ->
      wordRange(tok, from, to)));
}