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 couldn't prolongate you couldn't prolongate he couldn't prolongate we couldn't prolongate you couldn't prolongate they couldn't prolongate	I couldn't be prolongating you couldn't be prolongating he couldn't be prolongating we couldn't be prolongating you couldn't be prolongating they couldn't be prolongating
Perfect	V-ing perfect
I couldn't have prolongated you couldn't have prolongated he couldn't have prolongated we couldn't have prolongated you couldn't have prolongated they couldn't have prolongated	I couldn't have been prolongating you couldn't have been prolongating he couldn't have been prolongating we couldn't have been prolongating you couldn't have been prolongating they couldn't 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
couldn't I prolongate? couldn't you prolongate? couldn't he prolongate? couldn't we prolongate? couldn't you prolongate? couldn't they prolongate?	couldn't I be prolongating? couldn't you be prolongating? couldn't he be prolongating? couldn't we be prolongating? couldn't you be prolongating? couldn't they be prolongating?
Perfect	V-ing perfect
couldn't I have prolongated? couldn't you have prolongated? couldn't he have prolongated? couldn't we have prolongated? couldn't you have prolongated? couldn't they have prolongated?	couldn't I have been prolongating? couldn't you have been prolongating? couldn't he have been prolongating? couldn't we have been prolongating? couldn't you have been prolongating? couldn't they have been prolongating?