can porpoise
Regular verb: porpoise - porpoised- porpoised

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot porpoise
you cannot porpoise
he cannot porpoise
we cannot porpoise
you cannot porpoise
they cannot porpoise 	I cannot be porpoising
you cannot be porpoising
he cannot be porpoising
we cannot be porpoising
you cannot be porpoising
they cannot be porpoising	I cannot have porpoised
you cannot have porpoised
he cannot have porpoised
we cannot have porpoised
you cannot have porpoised
they cannot have porpoised	I cannot have been porpoising
you cannot have been porpoising
he cannot have been porpoising
we cannot have been porpoising
you cannot have been porpoising
they cannot have been porpoising	

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

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