Words with 'arh' at the start and 'r' at the end

What is the highest scoring word you can play in Scrabble ?
As there is only 1 entry available, you're forced to select 'arhar' scoring 8 points.

What's the max number of words you can put together from this combination of letters?
Oh dear, there is only 1 word that one can find using words that start with 'arh' and end with 'r'.