English verb conjugation
COULD EXACERBATE

Regular verb: exacerbate - exacerbated - exacerbated

Affirmation

Simple form	V-ing form
I could exacerbate you could exacerbate he could exacerbate we could exacerbate you could exacerbate they could exacerbate	I could be exacerbating you could be exacerbating he could be exacerbating we could be exacerbating you could be exacerbating they could be exacerbating
Perfect	V-ing perfect
I could have exacerbated you could have exacerbated he could have exacerbated we could have exacerbated you could have exacerbated they could have exacerbated	I could have been exacerbating you could have been exacerbating he could have been exacerbating we could have been exacerbating you could have been exacerbating they could have been exacerbating

Negation

Simple form	V-ing form
I couldn't exacerbate you couldn't exacerbate he couldn't exacerbate we couldn't exacerbate you couldn't exacerbate they couldn't exacerbate	I couldn't be exacerbating you couldn't be exacerbating he couldn't be exacerbating we couldn't be exacerbating you couldn't be exacerbating they couldn't be exacerbating
Perfect	V-ing perfect
I couldn't have exacerbated you couldn't have exacerbated he couldn't have exacerbated we couldn't have exacerbated you couldn't have exacerbated they couldn't have exacerbated	I couldn't have been exacerbating you couldn't have been exacerbating he couldn't have been exacerbating we couldn't have been exacerbating you couldn't have been exacerbating they couldn't have been exacerbating

Interrogative form

Simple form	V-ing form
could I exacerbate? could you exacerbate? could he exacerbate? could we exacerbate? could you exacerbate? could they exacerbate?	could I be exacerbating? could you be exacerbating? could he be exacerbating? could we be exacerbating? could you be exacerbating? could they be exacerbating?
Perfect	V-ing perfect
could I have exacerbated? could you have exacerbated? could he have exacerbated? could we have exacerbated? could you have exacerbated? could they have exacerbated?	could I have been exacerbating? could you have been exacerbating? could he have been exacerbating? could we have been exacerbating? could you have been exacerbating? could they have been exacerbating?

Interro-negative form

Simple form	V-ing form
couldn't I exacerbate? couldn't you exacerbate? couldn't he exacerbate? couldn't we exacerbate? couldn't you exacerbate? couldn't they exacerbate?	couldn't I be exacerbating? couldn't you be exacerbating? couldn't he be exacerbating? couldn't we be exacerbating? couldn't you be exacerbating? couldn't they be exacerbating?
Perfect	V-ing perfect
couldn't I have exacerbated? couldn't you have exacerbated? couldn't he have exacerbated? couldn't we have exacerbated? couldn't you have exacerbated? couldn't they have exacerbated?	couldn't I have been exacerbating? couldn't you have been exacerbating? couldn't he have been exacerbating? couldn't we have been exacerbating? couldn't you have been exacerbating? couldn't they have been exacerbating?