Try this run in Eb. It's similar to the one u typed above:
Eb, Db, Bb, A, Ab, Gb, Eb, Db, Bb, A, Ab, Gb, Eb, Db, ...... (notes)
4 3 2 1 3 2 1 3 2 1 3 2 1 3 (fingering)
When u start the run, start high with the 4th finger, then the rest is just 3, then 2, then 1, then 3, then 2, u get the idea?