For someone (actor -um- & theme i-) to sit down on something (loc ref), as a bench, bantog, dallapong; on the ground, lūta; floor, dotal.
umbun; ibun; mi'yibun
Hay nunti'īda' ya nablāya' at inumbūna' ta nun'eblāya'.
When I was climbing (the incline) I became tired and so I sat down to rest.
Umbunan: focus is on the location of sitting; ipabun: focus is on someone one causes someone to sit, either indirectly as by telling him or her to sit, or by holding and placing him or her in a sitting position.
For someone (actor mi'i & theme) to join others (loc ref) in sitting down.
mi'yibun is sometimes used as a euphemism for courting, hālud.
Tinnig'uh Bāyaw an immuy ni'yibun ad a''u hinan binabāi.
I saw Bāyaw go to sit with the girls last night.
mi'i-: mi'yibun, -um-: umbun; i-: ibun