English verb conjugation
COULD MADDEN

Regular verb: madden - maddened - maddened

Affirmation

Simple form	V-ing form
I could madden you could madden he could madden we could madden you could madden they could madden	I could be maddening you could be maddening he could be maddening we could be maddening you could be maddening they could be maddening
Perfect	V-ing perfect
I could have maddened you could have maddened he could have maddened we could have maddened you could have maddened they could have maddened	I could have been maddening you could have been maddening he could have been maddening we could have been maddening you could have been maddening they could have been maddening

Negation

Simple form	V-ing form
I couldn't madden you couldn't madden he couldn't madden we couldn't madden you couldn't madden they couldn't madden	I couldn't be maddening you couldn't be maddening he couldn't be maddening we couldn't be maddening you couldn't be maddening they couldn't be maddening
Perfect	V-ing perfect
I couldn't have maddened you couldn't have maddened he couldn't have maddened we couldn't have maddened you couldn't have maddened they couldn't have maddened	I couldn't have been maddening you couldn't have been maddening he couldn't have been maddening we couldn't have been maddening you couldn't have been maddening they couldn't have been maddening

Interrogative form

Simple form	V-ing form
could I madden? could you madden? could he madden? could we madden? could you madden? could they madden?	could I be maddening? could you be maddening? could he be maddening? could we be maddening? could you be maddening? could they be maddening?
Perfect	V-ing perfect
could I have maddened? could you have maddened? could he have maddened? could we have maddened? could you have maddened? could they have maddened?	could I have been maddening? could you have been maddening? could he have been maddening? could we have been maddening? could you have been maddening? could they have been maddening?

Interro-negative form

Simple form	V-ing form
couldn't I madden? couldn't you madden? couldn't he madden? couldn't we madden? couldn't you madden? couldn't they madden?	couldn't I be maddening? couldn't you be maddening? couldn't he be maddening? couldn't we be maddening? couldn't you be maddening? couldn't they be maddening?
Perfect	V-ing perfect
couldn't I have maddened? couldn't you have maddened? couldn't he have maddened? couldn't we have maddened? couldn't you have maddened? couldn't they have maddened?	couldn't I have been maddening? couldn't you have been maddening? couldn't he have been maddening? couldn't we have been maddening? couldn't you have been maddening? couldn't they have been maddening?