could dredge
Verbo regular: dredge - dredged- dredged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could dredge
you could dredge
he could dredge
we could dredge
you could dredge
they could dredge 	I could be dredging
you could be dredging
he could be dredging
we could be dredging
you could be dredging
they could be dredging	I could have dredged
you could have dredged
he could have dredged
we could have dredged
you could have dredged
they could have dredged	I could have been dredging
you could have been dredging
he could have been dredging
we could have been dredging
you could have been dredging
they could have been dredging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't dredge
you couldn't dredge
he couldn't dredge
we couldn't dredge
you couldn't dredge
they couldn't dredge 	I couldn't be dredging
you couldn't be dredging
he couldn't be dredging
we couldn't be dredging
you couldn't be dredging
they couldn't be dredging	I couldn't have dredged
you couldn't have dredged
he couldn't have dredged
we couldn't have dredged
you couldn't have dredged
they couldn't have dredged	I couldn't have been dredging
you couldn't have been dredging
he couldn't have been dredging
we couldn't have been dredging
you couldn't have been dredging
they couldn't have been dredging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I dredge?
could you dredge?
could he dredge?
could we dredge?
could you dredge?
could they dredge? 	could I be dredging?
could you be dredging?
could he be dredging?
could we be dredging?
could you be dredging?
could they be dredging? 	could I have dredged?
could you have dredged?
could he have dredged?
could we have dredged?
could you have dredged?
could they have dredged? 	could I have been dredging?
could you have been dredging?
could he have been dredging?
could we have been dredging?
could you have been dredging?
could they have been dredging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I dredge?
couldn't you dredge?
couldn't he dredge?
couldn't we dredge?
couldn't you dredge?
couldn't they dredge? 	couldn't I be dredging?
couldn't you be dredging?
couldn't he be dredging?
couldn't we be dredging?
couldn't you be dredging?
couldn't they be dredging? 	couldn't I have dredged?
couldn't you have dredged?
couldn't he have dredged?
couldn't we have dredged?
couldn't you have dredged?
couldn't they have dredged? 	couldn't I have been dredging?
couldn't you have been dredging?
couldn't he have been dredging?
couldn't we have been dredging?
couldn't you have been dredging?
couldn't they have been dredging?