could widen
Regular verb: widen - widened- widened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could widen
you could widen
she could widen
we could widen
you could widen
they could widen 	I could be widening
you could be widening
she could be widening
we could be widening
you could be widening
they could be widening	I could have widened
you could have widened
she could have widened
we could have widened
you could have widened
they could have widened	I could have been widening
you could have been widening
she could have been widening
we could have been widening
you could have been widening
they could have been widening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't widen
you couldn't widen
she couldn't widen
we couldn't widen
you couldn't widen
they couldn't widen 	I couldn't be widening
you couldn't be widening
she couldn't be widening
we couldn't be widening
you couldn't be widening
they couldn't be widening	I couldn't have widened
you couldn't have widened
she couldn't have widened
we couldn't have widened
you couldn't have widened
they couldn't have widened	I couldn't have been widening
you couldn't have been widening
she couldn't have been widening
we couldn't have been widening
you couldn't have been widening
they couldn't have been widening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I widen?
could you widen?
could she widen?
could we widen?
could you widen?
could they widen? 	could I be widening?
could you be widening?
could she be widening?
could we be widening?
could you be widening?
could they be widening? 	could I have widened?
could you have widened?
could she have widened?
could we have widened?
could you have widened?
could they have widened? 	could I have been widening?
could you have been widening?
could she have been widening?
could we have been widening?
could you have been widening?
could they have been widening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I widen?
couldn't you widen?
couldn't she widen?
couldn't we widen?
couldn't you widen?
couldn't they widen? 	couldn't I be widening?
couldn't you be widening?
couldn't she be widening?
couldn't we be widening?
couldn't you be widening?
couldn't they be widening? 	couldn't I have widened?
couldn't you have widened?
couldn't she have widened?
couldn't we have widened?
couldn't you have widened?
couldn't they have widened? 	couldn't I have been widening?
couldn't you have been widening?
couldn't she have been widening?
couldn't we have been widening?
couldn't you have been widening?
couldn't they have been widening?