I can unbar you can unbar he can unbar we can unbar you can unbar they can unbar
V-ing form
I can be unbarring you can be unbarring he can be unbarring we can be unbarring you can be unbarring they can be unbarring
Perfect
I can have unbarred you can have unbarred he can have unbarred we can have unbarred you can have unbarred they can have unbarred
V-ing perfect
I can have been unbarring you can have been unbarring he can have been unbarring we can have been unbarring you can have been unbarring they can have been unbarring
Negation
Simple form
I can't unbar you can't unbar he can't unbar we can't unbar you can't unbar they can't unbar
V-ing form
I can't be unbarring you can't be unbarring he can't be unbarring we can't be unbarring you can't be unbarring they can't be unbarring
Perfect
I can't have unbarred you can't have unbarred he can't have unbarred we can't have unbarred you can't have unbarred they can't have unbarred
V-ing perfect
I can't have been unbarring you can't have been unbarring he can't have been unbarring we can't have been unbarring you can't have been unbarring they can't have been unbarring
Interrogative form
Simple form
can I unbar? can you unbar? can he unbar? can we unbar? can you unbar? can they unbar?
V-ing form
can I be unbarring? can you be unbarring? can he be unbarring? can we be unbarring? can you be unbarring? can they be unbarring?
Perfect
can I have unbarred? can you have unbarred? can he have unbarred? can we have unbarred? can you have unbarred? can they have unbarred?
V-ing perfect
can I have been unbarring? can you have been unbarring? can he have been unbarring? can we have been unbarring? can you have been unbarring? can they have been unbarring?
Interro-negative form
Simple form
can't I unbar? can't you unbar? can't he unbar? can't we unbar? can't you unbar? can't they unbar?
V-ing form
can't I be unbarring? can't you be unbarring? can't he be unbarring? can't we be unbarring? can't you be unbarring? can't they be unbarring?
Perfect
can't I have unbarred? can't you have unbarred? can't he have unbarred? can't we have unbarred? can't you have unbarred? can't they have unbarred?
V-ing perfect
can't I have been unbarring? can't you have been unbarring? can't he have been unbarring? can't we have been unbarring? can't you have been unbarring? can't they have been unbarring?