English verb conjugation
CAN HAIL

Regular verb: hail - hailed - hailed

Affirmation

Simple form	V-ing form
I can hail you can hail he can hail we can hail you can hail they can hail	I can be hailing you can be hailing he can be hailing we can be hailing you can be hailing they can be hailing
Perfect	V-ing perfect
I can have hailed you can have hailed he can have hailed we can have hailed you can have hailed they can have hailed	I can have been hailing you can have been hailing he can have been hailing we can have been hailing you can have been hailing they can have been hailing

Negation

Simple form	V-ing form
I can't hail you can't hail he can't hail we can't hail you can't hail they can't hail	I can't be hailing you can't be hailing he can't be hailing we can't be hailing you can't be hailing they can't be hailing
Perfect	V-ing perfect
I can't have hailed you can't have hailed he can't have hailed we can't have hailed you can't have hailed they can't have hailed	I can't have been hailing you can't have been hailing he can't have been hailing we can't have been hailing you can't have been hailing they can't have been hailing

Interrogative form

Simple form	V-ing form
can I hail? can you hail? can he hail? can we hail? can you hail? can they hail?	can I be hailing? can you be hailing? can he be hailing? can we be hailing? can you be hailing? can they be hailing?
Perfect	V-ing perfect
can I have hailed? can you have hailed? can he have hailed? can we have hailed? can you have hailed? can they have hailed?	can I have been hailing? can you have been hailing? can he have been hailing? can we have been hailing? can you have been hailing? can they have been hailing?

Interro-negative form

Simple form	V-ing form
can't I hail? can't you hail? can't he hail? can't we hail? can't you hail? can't they hail?	can't I be hailing? can't you be hailing? can't he be hailing? can't we be hailing? can't you be hailing? can't they be hailing?
Perfect	V-ing perfect
can't I have hailed? can't you have hailed? can't he have hailed? can't we have hailed? can't you have hailed? can't they have hailed?	can't I have been hailing? can't you have been hailing? can't he have been hailing? can't we have been hailing? can't you have been hailing? can't they have been hailing?