English verb conjugation
CAN WAIL

Regular verb: wail - wailed - wailed

Affirmation

Simple form	V-ing form
I can wail you can wail she can wail we can wail you can wail they can wail	I can be wailing you can be wailing she can be wailing we can be wailing you can be wailing they can be wailing
Perfect	V-ing perfect
I can have wailed you can have wailed she can have wailed we can have wailed you can have wailed they can have wailed	I can have been wailing you can have been wailing she can have been wailing we can have been wailing you can have been wailing they can have been wailing

Negation

Simple form	V-ing form
I can't wail you can't wail she can't wail we can't wail you can't wail they can't wail	I can't be wailing you can't be wailing she can't be wailing we can't be wailing you can't be wailing they can't be wailing
Perfect	V-ing perfect
I can't have wailed you can't have wailed she can't have wailed we can't have wailed you can't have wailed they can't have wailed	I can't have been wailing you can't have been wailing she can't have been wailing we can't have been wailing you can't have been wailing they can't have been wailing

Interrogative form

Simple form	V-ing form
can I wail? can you wail? can she wail? can we wail? can you wail? can they wail?	can I be wailing? can you be wailing? can she be wailing? can we be wailing? can you be wailing? can they be wailing?
Perfect	V-ing perfect
can I have wailed? can you have wailed? can she have wailed? can we have wailed? can you have wailed? can they have wailed?	can I have been wailing? can you have been wailing? can she have been wailing? can we have been wailing? can you have been wailing? can they have been wailing?

Interro-negative form

Simple form	V-ing form
can't I wail? can't you wail? can't she wail? can't we wail? can't you wail? can't they wail?	can't I be wailing? can't you be wailing? can't she be wailing? can't we be wailing? can't you be wailing? can't they be wailing?
Perfect	V-ing perfect
can't I have wailed? can't you have wailed? can't she have wailed? can't we have wailed? can't you have wailed? can't they have wailed?	can't I have been wailing? can't you have been wailing? can't she have been wailing? can't we have been wailing? can't you have been wailing? can't they have been wailing?