iTextSharp.text.pdf.hyphenation.SimplePatternParser.GetPattern C# (CSharp) Method

        protected static String GetPattern(String word) {
            StringBuilder pat = new StringBuilder();
            int len = word.Length;
            for (int i = 0; i < len; i++) {
                if (!char.IsDigit(word[i])) {
                    pat.Append(word[i]);
                }
            }
            return pat.ToString();
        }