English verb conjugation
COULD PROLONGATE

Regular verb: prolongate - prolongated - prolongated

Affirmation

Simple form	V-ing form
I could prolongate you could prolongate he could prolongate we could prolongate you could prolongate they could prolongate	I could be prolongating you could be prolongating he could be prolongating we could be prolongating you could be prolongating they could be prolongating
Perfect	V-ing perfect
I could have prolongated you could have prolongated he could have prolongated we could have prolongated you could have prolongated they could have prolongated	I could have been prolongating you could have been prolongating he could have been prolongating we could have been prolongating you could have been prolongating they could have been prolongating

Negation

Simple form	V-ing form
I could not prolongate you could not prolongate he could not prolongate we could not prolongate you could not prolongate they could not prolongate	I could not be prolongating you could not be prolongating he could not be prolongating we could not be prolongating you could not be prolongating they could not be prolongating
Perfect	V-ing perfect
I could not have prolongated you could not have prolongated he could not have prolongated we could not have prolongated you could not have prolongated they could not have prolongated	I could not have been prolongating you could not have been prolongating he could not have been prolongating we could not have been prolongating you could not have been prolongating they could not have been prolongating

Interrogative form

Simple form	V-ing form
could I prolongate? could you prolongate? could he prolongate? could we prolongate? could you prolongate? could they prolongate?	could I be prolongating? could you be prolongating? could he be prolongating? could we be prolongating? could you be prolongating? could they be prolongating?
Perfect	V-ing perfect
could I have prolongated? could you have prolongated? could he have prolongated? could we have prolongated? could you have prolongated? could they have prolongated?	could I have been prolongating? could you have been prolongating? could he have been prolongating? could we have been prolongating? could you have been prolongating? could they have been prolongating?

Interro-negative form

Simple form	V-ing form
could I not prolongate? could you not prolongate? could he not prolongate? could we not prolongate? could you not prolongate? could they not prolongate?	could I not be prolongating? could you not be prolongating? could he not be prolongating? could we not be prolongating? could you not be prolongating? could they not be prolongating?
Perfect	V-ing perfect
could I not have prolongated? could you not have prolongated? could he not have prolongated? could we not have prolongated? could you not have prolongated? could they not have prolongated?	could I not have been prolongating? could you not have been prolongating? could he not have been prolongating? could we not have been prolongating? could you not have been prolongating? could they not have been prolongating?