sau BAI cmavo

sarcu modal, 1st place requiring ...

On affix form:

x1 is old/familiar/well-known to observer x2 in feature x3 (ka) by standard x4.

In notes:

x1 (abstract) is necessary/required for continuing state/process x2 under conditions x3.
pi'au (exp!)
digit/number: pi (approximately 3.1416...); the constant defined by the ratio of the circumference to the diameter of all circles.