English verb conjugation
COULD DAMPEN

Regular verb: dampen - dampened - dampened

Affirmation

Simple form	V-ing form
I could dampen you could dampen he could dampen we could dampen you could dampen they could dampen	I could be dampening you could be dampening he 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 he 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 he 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 he 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 he 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 he 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 he 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 he dampen? could we dampen? could you dampen? could they dampen?	could I be dampening? could you be dampening? could he 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 he 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 he 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 he 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 he 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 he 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 he not have been dampening? could we not have been dampening? could you not have been dampening? could they not have been dampening?