English verb conjugation
COULD DAMPEN

Regular verb: dampen - dampened - dampened

Affirmation

Simple form	V-ing form
I could dampen you could dampen she could dampen we could dampen you could dampen they could dampen	I could be dampening you could be dampening she could be dampening we could be dampening you could be dampening they could be dampening
Perfect	V-ing perfect
I could have dampened you could have dampened she could have dampened we could have dampened you could have dampened they could have dampened	I could have been dampening you could have been dampening she could have been dampening we could have been dampening you could have been dampening they could have been dampening

Negation

Simple form	V-ing form
I could not dampen you could not dampen she could not dampen we could not dampen you could not dampen they could not dampen	I could not be dampening you could not be dampening she could not be dampening we could not be dampening you could not be dampening they could not be dampening
Perfect	V-ing perfect
I could not have dampened you could not have dampened she could not have dampened we could not have dampened you could not have dampened they could not have dampened	I could not have been dampening you could not have been dampening she could not have been dampening we could not have been dampening you could not have been dampening they could not have been dampening

Interrogative form

Simple form	V-ing form
could I dampen? could you dampen? could she dampen? could we dampen? could you dampen? could they dampen?	could I be dampening? could you be dampening? could she be dampening? could we be dampening? could you be dampening? could they be dampening?
Perfect	V-ing perfect
could I have dampened? could you have dampened? could she have dampened? could we have dampened? could you have dampened? could they have dampened?	could I have been dampening? could you have been dampening? could she have been dampening? could we have been dampening? could you have been dampening? could they have been dampening?

Interro-negative form

Simple form	V-ing form
could I not dampen? could you not dampen? could she not dampen? could we not dampen? could you not dampen? could they not dampen?	could I not be dampening? could you not be dampening? could she not be dampening? could we not be dampening? could you not be dampening? could they not be dampening?
Perfect	V-ing perfect
could I not have dampened? could you not have dampened? could she not have dampened? could we not have dampened? could you not have dampened? could they not have dampened?	could I not have been dampening? could you not have been dampening? could she not have been dampening? could we not have been dampening? could you not have been dampening? could they not have been dampening?