I can holster you can holster he can holster we can holster you can holster they can holster
V-ing form
I can be holstering you can be holstering he can be holstering we can be holstering you can be holstering they can be holstering
Perfect
I can have holstered you can have holstered he can have holstered we can have holstered you can have holstered they can have holstered
V-ing perfect
I can have been holstering you can have been holstering he can have been holstering we can have been holstering you can have been holstering they can have been holstering
Negation
Simple form
I can't holster you can't holster he can't holster we can't holster you can't holster they can't holster
V-ing form
I can't be holstering you can't be holstering he can't be holstering we can't be holstering you can't be holstering they can't be holstering
Perfect
I can't have holstered you can't have holstered he can't have holstered we can't have holstered you can't have holstered they can't have holstered
V-ing perfect
I can't have been holstering you can't have been holstering he can't have been holstering we can't have been holstering you can't have been holstering they can't have been holstering
Interrogative form
Simple form
can I holster? can you holster? can he holster? can we holster? can you holster? can they holster?
V-ing form
can I be holstering? can you be holstering? can he be holstering? can we be holstering? can you be holstering? can they be holstering?
Perfect
can I have holstered? can you have holstered? can he have holstered? can we have holstered? can you have holstered? can they have holstered?
V-ing perfect
can I have been holstering? can you have been holstering? can he have been holstering? can we have been holstering? can you have been holstering? can they have been holstering?
Interro-negative form
Simple form
can't I holster? can't you holster? can't he holster? can't we holster? can't you holster? can't they holster?
V-ing form
can't I be holstering? can't you be holstering? can't he be holstering? can't we be holstering? can't you be holstering? can't they be holstering?
Perfect
can't I have holstered? can't you have holstered? can't he have holstered? can't we have holstered? can't you have holstered? can't they have holstered?
V-ing perfect
can't I have been holstering? can't you have been holstering? can't he have been holstering? can't we have been holstering? can't you have been holstering? can't they have been holstering?