If you could only use, say, 10 flies, what would you choose?

Same question asked a different way, if you were going to tie 10 flies because they were most productive what would you pick? These will be very regional!

For me:
Pheasant tail
Gold ribbed hares ear
Prince nymph
RS2
BWO sparkle dun
Hopper
Elk hair caddis
Parachute Adams
Scud
Leech, or maybe Rock Worm or San Juan worm.