Someone (mang-, mangi-) puts something (i-) in a bag (-an).
Mangisopot ka so byas do bayon.
Put the rice in a cloth bag.
Isopot mo no warawara mo do silopin.
Put your things in a cellophane bag.
Sopotan mo iyaw laylay mo tan dya mabasa.
Put your clothes in a bag so they do not get wet.