The root word is bili.
Bumili ako ng lapis.
I bought a pencil.
Bumibili ako ng lapis.
I am buying a pencil.
Bibili ako ng lapis.
I will buy a pencil.
Bumili ka ba ng lapis?
Did you buy a pencil?
Anong gusto mong bilhin?
What would you like to buy?
Gusto kong bumili ng pagkain.
I want to buy food.
Anong kailangang bilhin?
What needs to be bought?
Kailangang bumili ng asukal.
Need to buy sugar.
Kailangan kong bumili ng asin.
I need to buy salt.
Pabili ng…
I’d like to buy…
