Half-Synchronous Siteswap
From jugglingpatterns
A half-synchronous Siteswap is one, in which some hands in passing pattern do their throws on the same beat, but not all.
4-count is a half-synchronous passing pattern, as the right hand of both jugglers throws at the same time (== on the same beat) and the left hand of both jugglers throws at the same time.
Because several hands throw on the same beat, you have to mark, which hand a throw is going to. For two jugglers, this is done by marking passes with a p, e.g. "3p".
Example 4-count:
A: 3p 3 3 3 B: 3p 3 3 3 Hand: R L R L