English verb conjugation
COULD PARASAIL

Regular verb: parasail - parasailed - parasailed

Affirmation

Simple form	V-ing form
I could parasail you could parasail he could parasail we could parasail you could parasail they could parasail	I could be parasailing you could be parasailing he could be parasailing we could be parasailing you could be parasailing they could be parasailing
Perfect	V-ing perfect
I could have parasailed you could have parasailed he could have parasailed we could have parasailed you could have parasailed they could have parasailed	I could have been parasailing you could have been parasailing he could have been parasailing we could have been parasailing you could have been parasailing they could have been parasailing

Negation

Simple form	V-ing form
I could not parasail you could not parasail he could not parasail we could not parasail you could not parasail they could not parasail	I could not be parasailing you could not be parasailing he could not be parasailing we could not be parasailing you could not be parasailing they could not be parasailing
Perfect	V-ing perfect
I could not have parasailed you could not have parasailed he could not have parasailed we could not have parasailed you could not have parasailed they could not have parasailed	I could not have been parasailing you could not have been parasailing he could not have been parasailing we could not have been parasailing you could not have been parasailing they could not have been parasailing

Interrogative form

Simple form	V-ing form
could I parasail? could you parasail? could he parasail? could we parasail? could you parasail? could they parasail?	could I be parasailing? could you be parasailing? could he be parasailing? could we be parasailing? could you be parasailing? could they be parasailing?
Perfect	V-ing perfect
could I have parasailed? could you have parasailed? could he have parasailed? could we have parasailed? could you have parasailed? could they have parasailed?	could I have been parasailing? could you have been parasailing? could he have been parasailing? could we have been parasailing? could you have been parasailing? could they have been parasailing?

Interro-negative form

Simple form	V-ing form
could I not parasail? could you not parasail? could he not parasail? could we not parasail? could you not parasail? could they not parasail?	could I not be parasailing? could you not be parasailing? could he not be parasailing? could we not be parasailing? could you not be parasailing? could they not be parasailing?
Perfect	V-ing perfect
could I not have parasailed? could you not have parasailed? could he not have parasailed? could we not have parasailed? could you not have parasailed? could they not have parasailed?	could I not have been parasailing? could you not have been parasailing? could he not have been parasailing? could we not have been parasailing? could you not have been parasailing? could they not have been parasailing?