I can barhop you can barhop he can barhop we can barhop you can barhop they can barhop
V-ing form
I can be barhoping you can be barhoping he can be barhoping we can be barhoping you can be barhoping they can be barhoping
Perfect
I can have barhoped you can have barhoped he can have barhoped we can have barhoped you can have barhoped they can have barhoped
V-ing perfect
I can have been barhoping you can have been barhoping he can have been barhoping we can have been barhoping you can have been barhoping they can have been barhoping
Negation
Simple form
I can't barhop you can't barhop he can't barhop we can't barhop you can't barhop they can't barhop
V-ing form
I can't be barhoping you can't be barhoping he can't be barhoping we can't be barhoping you can't be barhoping they can't be barhoping
Perfect
I can't have barhoped you can't have barhoped he can't have barhoped we can't have barhoped you can't have barhoped they can't have barhoped
V-ing perfect
I can't have been barhoping you can't have been barhoping he can't have been barhoping we can't have been barhoping you can't have been barhoping they can't have been barhoping
Interrogative form
Simple form
can I barhop? can you barhop? can he barhop? can we barhop? can you barhop? can they barhop?
V-ing form
can I be barhoping? can you be barhoping? can he be barhoping? can we be barhoping? can you be barhoping? can they be barhoping?
Perfect
can I have barhoped? can you have barhoped? can he have barhoped? can we have barhoped? can you have barhoped? can they have barhoped?
V-ing perfect
can I have been barhoping? can you have been barhoping? can he have been barhoping? can we have been barhoping? can you have been barhoping? can they have been barhoping?
Interro-negative form
Simple form
can't I barhop? can't you barhop? can't he barhop? can't we barhop? can't you barhop? can't they barhop?
V-ing form
can't I be barhoping? can't you be barhoping? can't he be barhoping? can't we be barhoping? can't you be barhoping? can't they be barhoping?
Perfect
can't I have barhoped? can't you have barhoped? can't he have barhoped? can't we have barhoped? can't you have barhoped? can't they have barhoped?
V-ing perfect
can't I have been barhoping? can't you have been barhoping? can't he have been barhoping? can't we have been barhoping? can't you have been barhoping? can't they have been barhoping?