I can perforate you can perforate she can perforate we can perforate you can perforate they can perforate
V-ing form
I can be perforating you can be perforating she can be perforating we can be perforating you can be perforating they can be perforating
Perfect
I can have perforated you can have perforated she can have perforated we can have perforated you can have perforated they can have perforated
V-ing perfect
I can have been perforating you can have been perforating she can have been perforating we can have been perforating you can have been perforating they can have been perforating
Negation
Simple form
I can't perforate you can't perforate she can't perforate we can't perforate you can't perforate they can't perforate
V-ing form
I can't be perforating you can't be perforating she can't be perforating we can't be perforating you can't be perforating they can't be perforating
Perfect
I can't have perforated you can't have perforated she can't have perforated we can't have perforated you can't have perforated they can't have perforated
V-ing perfect
I can't have been perforating you can't have been perforating she can't have been perforating we can't have been perforating you can't have been perforating they can't have been perforating
Interrogative form
Simple form
can I perforate? can you perforate? can she perforate? can we perforate? can you perforate? can they perforate?
V-ing form
can I be perforating? can you be perforating? can she be perforating? can we be perforating? can you be perforating? can they be perforating?
Perfect
can I have perforated? can you have perforated? can she have perforated? can we have perforated? can you have perforated? can they have perforated?
V-ing perfect
can I have been perforating? can you have been perforating? can she have been perforating? can we have been perforating? can you have been perforating? can they have been perforating?
Interro-negative form
Simple form
can't I perforate? can't you perforate? can't she perforate? can't we perforate? can't you perforate? can't they perforate?
V-ing form
can't I be perforating? can't you be perforating? can't she be perforating? can't we be perforating? can't you be perforating? can't they be perforating?
Perfect
can't I have perforated? can't you have perforated? can't she have perforated? can't we have perforated? can't you have perforated? can't they have perforated?
V-ing perfect
can't I have been perforating? can't you have been perforating? can't she have been perforating? can't we have been perforating? can't you have been perforating? can't they have been perforating?