I may dampen you may dampen he may dampen we may dampen you may dampen they may dampen
V-ing form
I may be dampening you may be dampening he may be dampening we may be dampening you may be dampening they may be dampening
Perfect
I may have dampened you may have dampened he may have dampened we may have dampened you may have dampened they may have dampened
V-ing perfect
I may have been dampening you may have been dampening he may have been dampening we may have been dampening you may have been dampening they may have been dampening
Negation
Simple form
I may not dampen you may not dampen he may not dampen we may not dampen you may not dampen they may not dampen
V-ing form
I may not be dampening you may not be dampening he may not be dampening we may not be dampening you may not be dampening they may not be dampening
Perfect
I may not have dampened you may not have dampened he may not have dampened we may not have dampened you may not have dampened they may not have dampened
V-ing perfect
I may not have been dampening you may not have been dampening he may not have been dampening we may not have been dampening you may not have been dampening they may not have been dampening
Interrogative form
Simple form
may I dampen? may you dampen? may he dampen? may we dampen? may you dampen? may they dampen?
V-ing form
may I be dampening? may you be dampening? may he be dampening? may we be dampening? may you be dampening? may they be dampening?
Perfect
may I have dampened? may you have dampened? may he have dampened? may we have dampened? may you have dampened? may they have dampened?
V-ing perfect
may I have been dampening? may you have been dampening? may he have been dampening? may we have been dampening? may you have been dampening? may they have been dampening?
Interro-negative form
Simple form
may I not dampen? may you not dampen? may he not dampen? may we not dampen? may you not dampen? may they not dampen?
V-ing form
may I not be dampening? may you not be dampening? may he not be dampening? may we not be dampening? may you not be dampening? may they not be dampening?
Perfect
may I not have dampened? may you not have dampened? may he not have dampened? may we not have dampened? may you not have dampened? may they not have dampened?
V-ing perfect
may I not have been dampening? may you not have been dampening? may he not have been dampening? may we not have been dampening? may you not have been dampening? may they not have been dampening?