code: def in_grouping(self, s, min, max):
      if self.cursor >= self.limit:
          return False
      ch = ord(self.current[self.cursor])
      if ch > max or ch < min:
          return False
      ch -= min
      if (s[ch >> 3] & (0x1 << (ch & 0x7))) == 0:
          return False
      self.cursor += 1
      return True
  
label_desc: Use image node_id 5 for calling the BaseStemmer obj's underlying member method code with example usage: obj.in_grouping(s, min, max) and returns: True, False, False, False