mu'e is an event abstractor with the place structure x1 is a point event of (the bridi). It takes a bridi and wraps it into an event that is considered a single point in time, devoid of internal structure.
pu'u is an event abstractor with the place structure: x1 is a process of (the bridi) with stages x2. It takes a bridi and wraps it into an event considered as a process having a beginning, an internal structure and an end.
pu'u is an event abstractor with the place structure: x1 is a process of (the bridi) with stages x2. It takes a bridi and wraps it into an event considered as a process having a beginning, an internal structure and an end.
za'i is the event abstractor with the place structure: x1 is a continuous state of (the bridi) being true. It takes a bridi and wraps it into an event considered as a state. States have sharply defined natural boundaries dividing when the state exists and when it doesn't.