could porpoise
Regular verb: porpoise - porpoised- porpoised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could porpoise
you could porpoise
she could porpoise
we could porpoise
you could porpoise
they could porpoise 	I could be porpoising
you could be porpoising
she could be porpoising
we could be porpoising
you could be porpoising
they could be porpoising	I could have porpoised
you could have porpoised
she could have porpoised
we could have porpoised
you could have porpoised
they could have porpoised	I could have been porpoising
you could have been porpoising
she could have been porpoising
we could have been porpoising
you could have been porpoising
they could have been porpoising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not porpoise
you could not porpoise
she could not porpoise
we could not porpoise
you could not porpoise
they could not porpoise 	I could not be porpoising
you could not be porpoising
she could not be porpoising
we could not be porpoising
you could not be porpoising
they could not be porpoising	I could not have porpoised
you could not have porpoised
she could not have porpoised
we could not have porpoised
you could not have porpoised
they could not have porpoised	I could not have been porpoising
you could not have been porpoising
she could not have been porpoising
we could not have been porpoising
you could not have been porpoising
they could not have been porpoising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I porpoise?
could you porpoise?
could she porpoise?
could we porpoise?
could you porpoise?
could they porpoise? 	could I be porpoising?
could you be porpoising?
could she be porpoising?
could we be porpoising?
could you be porpoising?
could they be porpoising? 	could I have porpoised?
could you have porpoised?
could she have porpoised?
could we have porpoised?
could you have porpoised?
could they have porpoised? 	could I have been porpoising?
could you have been porpoising?
could she have been porpoising?
could we have been porpoising?
could you have been porpoising?
could they have been porpoising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not porpoise?
could you not porpoise?
could she not porpoise?
could we not porpoise?
could you not porpoise?
could they not porpoise? 	could I not be porpoising?
could you not be porpoising?
could she not be porpoising?
could we not be porpoising?
could you not be porpoising?
could they not be porpoising? 	could I not have porpoised?
could you not have porpoised?
could she not have porpoised?
could we not have porpoised?
could you not have porpoised?
could they not have porpoised? 	could I not have been porpoising?
could you not have been porpoising?
could she not have been porpoising?
could we not have been porpoising?
could you not have been porpoising?
could they not have been porpoising?