I can regularize you can regularize he can regularize we can regularize you can regularize they can regularize
V-ing form
I can be regularizing you can be regularizing he can be regularizing we can be regularizing you can be regularizing they can be regularizing
Perfect
I can have regularized you can have regularized he can have regularized we can have regularized you can have regularized they can have regularized
V-ing perfect
I can have been regularizing you can have been regularizing he can have been regularizing we can have been regularizing you can have been regularizing they can have been regularizing
Negation
Simple form
I cannot regularize you cannot regularize he cannot regularize we cannot regularize you cannot regularize they cannot regularize
V-ing form
I cannot be regularizing you cannot be regularizing he cannot be regularizing we cannot be regularizing you cannot be regularizing they cannot be regularizing
Perfect
I cannot have regularized you cannot have regularized he cannot have regularized we cannot have regularized you cannot have regularized they cannot have regularized
V-ing perfect
I cannot have been regularizing you cannot have been regularizing he cannot have been regularizing we cannot have been regularizing you cannot have been regularizing they cannot have been regularizing
Interrogative form
Simple form
can I regularize? can you regularize? can he regularize? can we regularize? can you regularize? can they regularize?
V-ing form
can I be regularizing? can you be regularizing? can he be regularizing? can we be regularizing? can you be regularizing? can they be regularizing?
Perfect
can I have regularized? can you have regularized? can he have regularized? can we have regularized? can you have regularized? can they have regularized?
V-ing perfect
can I have been regularizing? can you have been regularizing? can he have been regularizing? can we have been regularizing? can you have been regularizing? can they have been regularizing?
Interro-negative form
Simple form
can I not regularize? can you not regularize? can he not regularize? can we not regularize? can you not regularize? can they not regularize?
V-ing form
can I not be regularizing? can you not be regularizing? can he not be regularizing? can we not be regularizing? can you not be regularizing? can they not be regularizing?
Perfect
can I not have regularized? can you not have regularized? can he not have regularized? can we not have regularized? can you not have regularized? can they not have regularized?
V-ing perfect
can I not have been regularizing? can you not have been regularizing? can he not have been regularizing? can we not have been regularizing? can you not have been regularizing? can they not have been regularizing?