English verb conjugation
CAN BARBER

Regular verb: barber - barbered - barbered

Affirmation

Simple form	V-ing form
I can barber you can barber he can barber we can barber you can barber they can barber	I can be barbering you can be barbering he can be barbering we can be barbering you can be barbering they can be barbering
Perfect	V-ing perfect
I can have barbered you can have barbered he can have barbered we can have barbered you can have barbered they can have barbered	I can have been barbering you can have been barbering he can have been barbering we can have been barbering you can have been barbering they can have been barbering

Negation

Simple form	V-ing form
I can't barber you can't barber he can't barber we can't barber you can't barber they can't barber	I can't be barbering you can't be barbering he can't be barbering we can't be barbering you can't be barbering they can't be barbering
Perfect	V-ing perfect
I can't have barbered you can't have barbered he can't have barbered we can't have barbered you can't have barbered they can't have barbered	I can't have been barbering you can't have been barbering he can't have been barbering we can't have been barbering you can't have been barbering they can't have been barbering

Interrogative form

Simple form	V-ing form
can I barber? can you barber? can he barber? can we barber? can you barber? can they barber?	can I be barbering? can you be barbering? can he be barbering? can we be barbering? can you be barbering? can they be barbering?
Perfect	V-ing perfect
can I have barbered? can you have barbered? can he have barbered? can we have barbered? can you have barbered? can they have barbered?	can I have been barbering? can you have been barbering? can he have been barbering? can we have been barbering? can you have been barbering? can they have been barbering?

Interro-negative form

Simple form	V-ing form
can't I barber? can't you barber? can't he barber? can't we barber? can't you barber? can't they barber?	can't I be barbering? can't you be barbering? can't he be barbering? can't we be barbering? can't you be barbering? can't they be barbering?
Perfect	V-ing perfect
can't I have barbered? can't you have barbered? can't he have barbered? can't we have barbered? can't you have barbered? can't they have barbered?	can't I have been barbering? can't you have been barbering? can't he have been barbering? can't we have been barbering? can't you have been barbering? can't they have been barbering?