code: def sequence(*es):
      
      def match_sequence(s, grm=None, pos=0):
          data = []
          start = pos
          for e in es:
              s, obj, span = e(s, grm, pos)
              pos = span[1]
              if obj is not Ignore:
                  data.append(obj)
          return PegreResult(s, data, (start, pos))
      return match_sequence
docs: Create a PEG function to match a sequence.