Sugar Free Candy

I have really enjoyed the message board (and others) over the last week or so but never responded or asked any questions, so here it goes.....

I know in Phase one you are allowed a small amount of sugar free hard candy. What about other sugar free products? I found a sugar free licorice and was not sure if that would be fair game or not. What are the key words that would sound an alarm.

Thanks for the advice -