private static void expandLargeNumber(string numberString, string order, int numberZeroes, WordRelation wordRelation)
        {
            int numberDigits = numberString.Length;

            // parse out the prefix, e.g., "113" in "113,000"
            int    i    = numberDigits - numberZeroes;
            string part = numberString.Substring(0, i);

            // get how many thousands/millions/billions
            Item oldTail = wordRelation.getTail();

            expandNumber(part, wordRelation);
            if (wordRelation.getTail() != oldTail)
            {
                wordRelation.addWord(order);
            }
            expandNumberAt(numberString, i, wordRelation);
        }
        public static void expandOrdinal(string rawNumberString, WordRelation wordRelation)
        {
            expandNumber(rawNumberString.Replace(",", ""), wordRelation);

            // get the last in the list of number strings
            Item lastItem = wordRelation.getTail();

            if (lastItem != null)
            {
                FeatureSet featureSet = lastItem.getFeatures();
                string     lastNumber = featureSet.getString("name");
                string     ordinal    = findMatchInArray(lastNumber, digit2num, ord2num);

                if (ordinal == null)
                {
                    ordinal = findMatchInArray(lastNumber, digit2teen, ord2teen);
                }
                if (ordinal == null)
                {
                    ordinal = findMatchInArray(lastNumber, digit2enty, ord2enty);
                }

                if (lastNumber.Equals("hundred"))
                {
                    ordinal = "hundredth";
                }
                else if (lastNumber.Equals("thousand"))
                {
                    ordinal = "thousandth";
                }
                else if (lastNumber.Equals("billion"))
                {
                    ordinal = "billionth";
                }

                // if there was an ordinal, set the last element of the list
                // to that ordinal; otherwise, don't do anything
                if (ordinal != null)
                {
                    wordRelation.setLastWord(ordinal);
                }
            }
        }