co'a ZAhO -co'a- cmavo

interval event contour: at the starting point of ...; initiative >|< |.

In notes:

cfatse
x1 sits down on x2.
co'acfa
x1=cf1 [state/event/process] commences/initiates/starts/begins to occur from its natural start; (intransitive verb).
co'arbi'o
b1 starts to become b2 under conditions b3.
co'asku
c1 (agent) starts to express/say c2 (sedu'u/text/lu'e concept) for audience c3 via expressive medium c4.