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 could not drudge
you could not drudge
he could not drudge
we could not drudge
you could not drudge
they could not drudge 	I could not be drudging
you could not be drudging
he could not be drudging
we could not be drudging
you could not be drudging
they could not be drudging	I could not have drudged
you could not have drudged
he could not have drudged
we could not have drudged
you could not have drudged
they could not have drudged	I could not have been drudging
you could not have been drudging
he could not have been drudging
we could not have been drudging
you could not have been drudging
they could not 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 	
could I not drudge?
could you not drudge?
could he not drudge?
could we not drudge?
could you not drudge?
could they not drudge? 	could I not be drudging?
could you not be drudging?
could he not be drudging?
could we not be drudging?
could you not be drudging?
could they not be drudging? 	could I not have drudged?
could you not have drudged?
could he not have drudged?
could we not have drudged?
could you not have drudged?
could they not have drudged? 	could I not have been drudging?
could you not have been drudging?
could he not have been drudging?
could we not have been drudging?
could you not have been drudging?
could they not have been drudging?