English verb conjugation
COULD PREADVERTIZE

Regular verb: preadvertize - preadvertized - preadvertized

Affirmation

Simple form	V-ing form
I could preadvertize you could preadvertize he could preadvertize we could preadvertize you could preadvertize they could preadvertize	I could be preadvertizing you could be preadvertizing he could be preadvertizing we could be preadvertizing you could be preadvertizing they could be preadvertizing
Perfect	V-ing perfect
I could have preadvertized you could have preadvertized he could have preadvertized we could have preadvertized you could have preadvertized they could have preadvertized	I could have been preadvertizing you could have been preadvertizing he could have been preadvertizing we could have been preadvertizing you could have been preadvertizing they could have been preadvertizing

Negation

Simple form	V-ing form
I couldn't preadvertize you couldn't preadvertize he couldn't preadvertize we couldn't preadvertize you couldn't preadvertize they couldn't preadvertize	I couldn't be preadvertizing you couldn't be preadvertizing he couldn't be preadvertizing we couldn't be preadvertizing you couldn't be preadvertizing they couldn't be preadvertizing
Perfect	V-ing perfect
I couldn't have preadvertized you couldn't have preadvertized he couldn't have preadvertized we couldn't have preadvertized you couldn't have preadvertized they couldn't have preadvertized	I couldn't have been preadvertizing you couldn't have been preadvertizing he couldn't have been preadvertizing we couldn't have been preadvertizing you couldn't have been preadvertizing they couldn't have been preadvertizing

Interrogative form

Simple form	V-ing form
could I preadvertize? could you preadvertize? could he preadvertize? could we preadvertize? could you preadvertize? could they preadvertize?	could I be preadvertizing? could you be preadvertizing? could he be preadvertizing? could we be preadvertizing? could you be preadvertizing? could they be preadvertizing?
Perfect	V-ing perfect
could I have preadvertized? could you have preadvertized? could he have preadvertized? could we have preadvertized? could you have preadvertized? could they have preadvertized?	could I have been preadvertizing? could you have been preadvertizing? could he have been preadvertizing? could we have been preadvertizing? could you have been preadvertizing? could they have been preadvertizing?

Interro-negative form

Simple form	V-ing form
couldn't I preadvertize? couldn't you preadvertize? couldn't he preadvertize? couldn't we preadvertize? couldn't you preadvertize? couldn't they preadvertize?	couldn't I be preadvertizing? couldn't you be preadvertizing? couldn't he be preadvertizing? couldn't we be preadvertizing? couldn't you be preadvertizing? couldn't they be preadvertizing?
Perfect	V-ing perfect
couldn't I have preadvertized? couldn't you have preadvertized? couldn't he have preadvertized? couldn't we have preadvertized? couldn't you have preadvertized? couldn't they have preadvertized?	couldn't I have been preadvertizing? couldn't you have been preadvertizing? couldn't he have been preadvertizing? couldn't we have been preadvertizing? couldn't you have been preadvertizing? couldn't they have been preadvertizing?