English verb conjugation
CAN PARASAIL

Regular verb: parasail - parasailed - parasailed

Affirmation

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

Negation

Simple form	V-ing form
I can't parasail you can't parasail he can't parasail we can't parasail you can't parasail they can't parasail	I can't be parasailing you can't be parasailing he can't be parasailing we can't be parasailing you can't be parasailing they can't be parasailing
Perfect	V-ing perfect
I can't have parasailed you can't have parasailed he can't have parasailed we can't have parasailed you can't have parasailed they can't have parasailed	I can't have been parasailing you can't have been parasailing he can't have been parasailing we can't have been parasailing you can't have been parasailing they can't have been parasailing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I parasail? can't you parasail? can't he parasail? can't we parasail? can't you parasail? can't they parasail?	can't I be parasailing? can't you be parasailing? can't he be parasailing? can't we be parasailing? can't you be parasailing? can't they be parasailing?
Perfect	V-ing perfect
can't I have parasailed? can't you have parasailed? can't he have parasailed? can't we have parasailed? can't you have parasailed? can't they have parasailed?	can't I have been parasailing? can't you have been parasailing? can't he have been parasailing? can't we have been parasailing? can't you have been parasailing? can't they have been parasailing?