could prosecute
Regular verb: prosecute - prosecuted- prosecuted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prosecute
you could prosecute
he could prosecute
we could prosecute
you could prosecute
they could prosecute 	I could be prosecuting
you could be prosecuting
he could be prosecuting
we could be prosecuting
you could be prosecuting
they could be prosecuting	I could have prosecuted
you could have prosecuted
he could have prosecuted
we could have prosecuted
you could have prosecuted
they could have prosecuted	I could have been prosecuting
you could have been prosecuting
he could have been prosecuting
we could have been prosecuting
you could have been prosecuting
they could have been prosecuting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't prosecute
you couldn't prosecute
he couldn't prosecute
we couldn't prosecute
you couldn't prosecute
they couldn't prosecute 	I couldn't be prosecuting
you couldn't be prosecuting
he couldn't be prosecuting
we couldn't be prosecuting
you couldn't be prosecuting
they couldn't be prosecuting	I couldn't have prosecuted
you couldn't have prosecuted
he couldn't have prosecuted
we couldn't have prosecuted
you couldn't have prosecuted
they couldn't have prosecuted	I couldn't have been prosecuting
you couldn't have been prosecuting
he couldn't have been prosecuting
we couldn't have been prosecuting
you couldn't have been prosecuting
they couldn't have been prosecuting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I prosecute?
could you prosecute?
could he prosecute?
could we prosecute?
could you prosecute?
could they prosecute? 	could I be prosecuting?
could you be prosecuting?
could he be prosecuting?
could we be prosecuting?
could you be prosecuting?
could they be prosecuting? 	could I have prosecuted?
could you have prosecuted?
could he have prosecuted?
could we have prosecuted?
could you have prosecuted?
could they have prosecuted? 	could I have been prosecuting?
could you have been prosecuting?
could he have been prosecuting?
could we have been prosecuting?
could you have been prosecuting?
could they have been prosecuting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I prosecute?
couldn't you prosecute?
couldn't he prosecute?
couldn't we prosecute?
couldn't you prosecute?
couldn't they prosecute? 	couldn't I be prosecuting?
couldn't you be prosecuting?
couldn't he be prosecuting?
couldn't we be prosecuting?
couldn't you be prosecuting?
couldn't they be prosecuting? 	couldn't I have prosecuted?
couldn't you have prosecuted?
couldn't he have prosecuted?
couldn't we have prosecuted?
couldn't you have prosecuted?
couldn't they have prosecuted? 	couldn't I have been prosecuting?
couldn't you have been prosecuting?
couldn't he have been prosecuting?
couldn't we have been prosecuting?
couldn't you have been prosecuting?
couldn't they have been prosecuting?