These are variations on mild madness.
Variations are made by having the 2 jugglers swap between crossing and straight passes. I've used colored bars to help you see if a juggler is doing crossing (blue) or straight (red) passes. It's always quite fun to see who's going to drop first.
The two jugglers change at the same time every 6 beats (the time for PPS PPZS). The consequence is that each juggler has the zip twice in a row, the new cycle being PPS PPZS PPZS PPS.
The two jugglers change at the same time every 3 beats (the time for PPS or for PPZS). As a consequence, one juggler now has all the zips, while the other one is just doing PPS.
The two jugglers change every 6 beats but not at the same time. As a consequence, one of them has no more zips, while the other one keeps having as many zips as usual. There are some collision problems.