could drudge
Regular verb: drudge - drudged- drudged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?