English verb conjugation
COULD PORPOISE

Regular verb: porpoise - porpoised - porpoised

Affirmation

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