Someone (mag-) makes a shady place over someone (-an) with something (i-).
Maglongālong si ikit do tālon, ta makohat.
Aunt makes a shady place at the rice paddy, because it is hot.
Longalōngan mo si ādi mo, ta makohatan.
Make a shady place over your younger sibling, because he will be heated (by the sun).