English verb conjugation
MUST DAMPEN

Regular verb: dampen - dampened - dampened

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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