|----5--7--8
|----5--6--8
|----5--7--9
Play these in every combination you can think of. You may have to play with your guitar a little higher than what you're used to to be able to get your fingers there.
That's my solo advice of the year.
ie:
|--------------------------------------------------------5-7-8
|---------------------------------------------5-7-8
|---------------------------------5-7-8
|----------------------5-7-8
|-----------5-7-8
|5-7-8
and back down and in reverse order and whatnot. Two kinds of players - pent and minor - but if you can score both you're in the clear.