Someone (mag-, mangi-) contributes something (i-) for an occasion.
Mangiyor-or so asin kan rakanen.
He is the one to contribute salt and vegetables.
Iyor-or ni ānang kwarta na para do kompli da.
Mother contributes her money for their birthday party.
Someone (machi-) joins to contribute something for an occasion.
Nachior-or si ānang do byas, ta mangay sa do ranso.
Mother joined to contribute rice, because they are going on an outing.
Two or more people (magV-) each contribute something for their undertaking.
Nagoor-or sa āmang kan marāan do bago, ta gomātang sa so nwang da.
Father and uncle each contributed in a pig, because they (want) to buy their carabao.