public string Encode(string word)
{
if (String.IsNullOrEmpty(word))
{
return("0000");
}
if (word.Length == 1)
{
return(String.Format(word + "000"));
}
if (word.Any(x => !char.IsLetter(x)))
{
return("0000");
}
string lowerCaseWord = word.ToLower();
string encodedWord = _algorithm.EncodeWord(lowerCaseWord);
encodedWord = EncodeWord(lowerCaseWord);
TrimString(ref encodedWord);
return(encodedWord);
}