public Node(string word, Node parent)
{
Word = word;
_parentNode = parent;
Paths = Traveler.LegalMoves(word, ref _dict).Except(TraceAncestry());
}
public Node(string word)
{
Word = word;
_dict = Dictionary.GetWordsOfLength(Word.Length);
Paths = Traveler.LegalMoves(word, ref _dict);
}