English verb conjugation
COULD DRUDGE

Regular verb: drudge - drudged - drudged

Affirmation

Simple form	V-ing form
I could drudge you could drudge he could drudge we could drudge you could drudge they could drudge	I could be drudging you could be drudging he could be drudging we could be drudging you could be drudging they could be drudging
Perfect	V-ing perfect
I could have drudged you could have drudged he could have drudged we could have drudged you could have drudged they could have drudged	I could have been drudging you could have been drudging he could have been drudging we could have been drudging you could have been drudging they could have been drudging

Negation

Simple form	V-ing form
I couldn't drudge you couldn't drudge he couldn't drudge we couldn't drudge you couldn't drudge they couldn't drudge	I couldn't be drudging you couldn't be drudging he couldn't be drudging we couldn't be drudging you couldn't be drudging they couldn't be drudging
Perfect	V-ing perfect
I couldn't have drudged you couldn't have drudged he couldn't have drudged we couldn't have drudged you couldn't have drudged they couldn't have drudged	I couldn't have been drudging you couldn't have been drudging he couldn't have been drudging we couldn't have been drudging you couldn't have been drudging they couldn't have been drudging

Interrogative form

Simple form	V-ing form
could I drudge? could you drudge? could he drudge? could we drudge? could you drudge? could they drudge?	could I be drudging? could you be drudging? could he be drudging? could we be drudging? could you be drudging? could they be drudging?
Perfect	V-ing perfect
could I have drudged? could you have drudged? could he have drudged? could we have drudged? could you have drudged? could they have drudged?	could I have been drudging? could you have been drudging? could he have been drudging? could we have been drudging? could you have been drudging? could they have been drudging?

Interro-negative form

Simple form	V-ing form
couldn't I drudge? couldn't you drudge? couldn't he drudge? couldn't we drudge? couldn't you drudge? couldn't they drudge?	couldn't I be drudging? couldn't you be drudging? couldn't he be drudging? couldn't we be drudging? couldn't you be drudging? couldn't they be drudging?
Perfect	V-ing perfect
couldn't I have drudged? couldn't you have drudged? couldn't he have drudged? couldn't we have drudged? couldn't you have drudged? couldn't they have drudged?	couldn't I have been drudging? couldn't you have been drudging? couldn't he have been drudging? couldn't we have been drudging? couldn't you have been drudging? couldn't they have been drudging?