I can deface you can deface she can deface we can deface you can deface they can deface
V-ing form
I can be defacing you can be defacing she can be defacing we can be defacing you can be defacing they can be defacing
Perfect
I can have defaced you can have defaced she can have defaced we can have defaced you can have defaced they can have defaced
V-ing perfect
I can have been defacing you can have been defacing she can have been defacing we can have been defacing you can have been defacing they can have been defacing
Negation
Simple form
I can't deface you can't deface she can't deface we can't deface you can't deface they can't deface
V-ing form
I can't be defacing you can't be defacing she can't be defacing we can't be defacing you can't be defacing they can't be defacing
Perfect
I can't have defaced you can't have defaced she can't have defaced we can't have defaced you can't have defaced they can't have defaced
V-ing perfect
I can't have been defacing you can't have been defacing she can't have been defacing we can't have been defacing you can't have been defacing they can't have been defacing
Interrogative form
Simple form
can I deface? can you deface? can she deface? can we deface? can you deface? can they deface?
V-ing form
can I be defacing? can you be defacing? can she be defacing? can we be defacing? can you be defacing? can they be defacing?
Perfect
can I have defaced? can you have defaced? can she have defaced? can we have defaced? can you have defaced? can they have defaced?
V-ing perfect
can I have been defacing? can you have been defacing? can she have been defacing? can we have been defacing? can you have been defacing? can they have been defacing?
Interro-negative form
Simple form
can't I deface? can't you deface? can't she deface? can't we deface? can't you deface? can't they deface?
V-ing form
can't I be defacing? can't you be defacing? can't she be defacing? can't we be defacing? can't you be defacing? can't they be defacing?
Perfect
can't I have defaced? can't you have defaced? can't she have defaced? can't we have defaced? can't you have defaced? can't they have defaced?
V-ing perfect
can't I have been defacing? can't you have been defacing? can't she have been defacing? can't we have been defacing? can't you have been defacing? can't they have been defacing?