I can gape you can gape he can gape we can gape you can gape they can gape
V-ing form
I can be gaping you can be gaping he can be gaping we can be gaping you can be gaping they can be gaping
Perfect
I can have gaped you can have gaped he can have gaped we can have gaped you can have gaped they can have gaped
V-ing perfect
I can have been gaping you can have been gaping he can have been gaping we can have been gaping you can have been gaping they can have been gaping
Negation
Simple form
I can't gape you can't gape he can't gape we can't gape you can't gape they can't gape
V-ing form
I can't be gaping you can't be gaping he can't be gaping we can't be gaping you can't be gaping they can't be gaping
Perfect
I can't have gaped you can't have gaped he can't have gaped we can't have gaped you can't have gaped they can't have gaped
V-ing perfect
I can't have been gaping you can't have been gaping he can't have been gaping we can't have been gaping you can't have been gaping they can't have been gaping
Interrogative form
Simple form
can I gape? can you gape? can he gape? can we gape? can you gape? can they gape?
V-ing form
can I be gaping? can you be gaping? can he be gaping? can we be gaping? can you be gaping? can they be gaping?
Perfect
can I have gaped? can you have gaped? can he have gaped? can we have gaped? can you have gaped? can they have gaped?
V-ing perfect
can I have been gaping? can you have been gaping? can he have been gaping? can we have been gaping? can you have been gaping? can they have been gaping?
Interro-negative form
Simple form
can't I gape? can't you gape? can't he gape? can't we gape? can't you gape? can't they gape?
V-ing form
can't I be gaping? can't you be gaping? can't he be gaping? can't we be gaping? can't you be gaping? can't they be gaping?
Perfect
can't I have gaped? can't you have gaped? can't he have gaped? can't we have gaped? can't you have gaped? can't they have gaped?
V-ing perfect
can't I have been gaping? can't you have been gaping? can't he have been gaping? can't we have been gaping? can't you have been gaping? can't they have been gaping?