public PatternState(UtterancePattern originalPattern, int coveredOffset)
{
Parent = null;
CoveredOffset = coveredOffset;
OriginalPattern = originalPattern;
Substitutions = new IEnumerable <string>[] { };
}
private PatternState(PatternState parent, int index, int coveredOffset, IEnumerable <IEnumerable <string> > substitutions)
{
Parent = parent;
CoveredOffset = coveredOffset;
OriginalPattern = parent.OriginalPattern;
StateIndex = index;
Substitutions = substitutions;
}
