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