Surprised no one else has tried the CS '78/DD '76 Synth Lead:
RIRIRUYTRT
RIRIRUYTR [ETA: That last note doesn't seem entirely right to me, but 5 sounds even less right]
It helps to tweak the knobs around a bit; probably won't sound exactly like the original, though.
As soon as someone recreates the synth solo from Rush's "Subdivisions", I'll be happy.