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 couldn't dampen you couldn't dampen he couldn't dampen we couldn't dampen you couldn't dampen they couldn't dampen	I couldn't be dampening you couldn't be dampening he couldn't be dampening we couldn't be dampening you couldn't be dampening they couldn't be dampening
Perfect	V-ing perfect
I couldn't have dampened you couldn't have dampened he couldn't have dampened we couldn't have dampened you couldn't have dampened they couldn't have dampened	I couldn't have been dampening you couldn't have been dampening he couldn't have been dampening we couldn't have been dampening you couldn't have been dampening they couldn't 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
couldn't I dampen? couldn't you dampen? couldn't he dampen? couldn't we dampen? couldn't you dampen? couldn't they dampen?	couldn't I be dampening? couldn't you be dampening? couldn't he be dampening? couldn't we be dampening? couldn't you be dampening? couldn't they be dampening?
Perfect	V-ing perfect
couldn't I have dampened? couldn't you have dampened? couldn't he have dampened? couldn't we have dampened? couldn't you have dampened? couldn't they have dampened?	couldn't I have been dampening? couldn't you have been dampening? couldn't he have been dampening? couldn't we have been dampening? couldn't you have been dampening? couldn't they have been dampening?