English verb conjugation
COULD PREADVERTISE

Regular verb: preadvertise - preadvertised - preadvertised

Affirmation

Simple form	V-ing form
I could preadvertise you could preadvertise he could preadvertise we could preadvertise you could preadvertise they could preadvertise	I could be preadvertising you could be preadvertising he could be preadvertising we could be preadvertising you could be preadvertising they could be preadvertising
Perfect	V-ing perfect
I could have preadvertised you could have preadvertised he could have preadvertised we could have preadvertised you could have preadvertised they could have preadvertised	I could have been preadvertising you could have been preadvertising he could have been preadvertising we could have been preadvertising you could have been preadvertising they could have been preadvertising

Negation

Simple form	V-ing form
I could not preadvertise you could not preadvertise he could not preadvertise we could not preadvertise you could not preadvertise they could not preadvertise	I could not be preadvertising you could not be preadvertising he could not be preadvertising we could not be preadvertising you could not be preadvertising they could not be preadvertising
Perfect	V-ing perfect
I could not have preadvertised you could not have preadvertised he could not have preadvertised we could not have preadvertised you could not have preadvertised they could not have preadvertised	I could not have been preadvertising you could not have been preadvertising he could not have been preadvertising we could not have been preadvertising you could not have been preadvertising they could not have been preadvertising

Interrogative form

Simple form	V-ing form
could I preadvertise? could you preadvertise? could he preadvertise? could we preadvertise? could you preadvertise? could they preadvertise?	could I be preadvertising? could you be preadvertising? could he be preadvertising? could we be preadvertising? could you be preadvertising? could they be preadvertising?
Perfect	V-ing perfect
could I have preadvertised? could you have preadvertised? could he have preadvertised? could we have preadvertised? could you have preadvertised? could they have preadvertised?	could I have been preadvertising? could you have been preadvertising? could he have been preadvertising? could we have been preadvertising? could you have been preadvertising? could they have been preadvertising?

Interro-negative form

Simple form	V-ing form
could I not preadvertise? could you not preadvertise? could he not preadvertise? could we not preadvertise? could you not preadvertise? could they not preadvertise?	could I not be preadvertising? could you not be preadvertising? could he not be preadvertising? could we not be preadvertising? could you not be preadvertising? could they not be preadvertising?
Perfect	V-ing perfect
could I not have preadvertised? could you not have preadvertised? could he not have preadvertised? could we not have preadvertised? could you not have preadvertised? could they not have preadvertised?	could I not have been preadvertising? could you not have been preadvertising? could he not have been preadvertising? could we not have been preadvertising? could you not have been preadvertising? could they not have been preadvertising?