One of the coolest 303 patterns i ever made was a 6 step pattern, but with accent off, it sounded like a basic 4 step pattern. But when the accent was brought up, it suddenly turned into a 6 stepper. Sounded pretty cool. I really like using 6 step sequences a lot. 10 steps are pretty tricky. EgeBamYasi's Sponge is based around a 10 step 303 pattern.