code: function step2(token) {
      var r1 = getR1(token);
  
      if (!r1) {
          return token;
      }
  
      if (r1.match(/(d|v)t$/)) {
          return token.slice(0, -1);
      }
  
      return token;
  }
docs: step 2 as defined for the porter stemmer algorithm.