I can reform you can reform she can reform we can reform you can reform they can reform
V-ing form
I can be reforming you can be reforming she can be reforming we can be reforming you can be reforming they can be reforming
Perfect
I can have reformed you can have reformed she can have reformed we can have reformed you can have reformed they can have reformed
V-ing perfect
I can have been reforming you can have been reforming she can have been reforming we can have been reforming you can have been reforming they can have been reforming
Negation
Simple form
I cannot reform you cannot reform she cannot reform we cannot reform you cannot reform they cannot reform
V-ing form
I cannot be reforming you cannot be reforming she cannot be reforming we cannot be reforming you cannot be reforming they cannot be reforming
Perfect
I cannot have reformed you cannot have reformed she cannot have reformed we cannot have reformed you cannot have reformed they cannot have reformed
V-ing perfect
I cannot have been reforming you cannot have been reforming she cannot have been reforming we cannot have been reforming you cannot have been reforming they cannot have been reforming
Interrogative form
Simple form
can I reform? can you reform? can she reform? can we reform? can you reform? can they reform?
V-ing form
can I be reforming? can you be reforming? can she be reforming? can we be reforming? can you be reforming? can they be reforming?
Perfect
can I have reformed? can you have reformed? can she have reformed? can we have reformed? can you have reformed? can they have reformed?
V-ing perfect
can I have been reforming? can you have been reforming? can she have been reforming? can we have been reforming? can you have been reforming? can they have been reforming?
Interro-negative form
Simple form
can I not reform? can you not reform? can she not reform? can we not reform? can you not reform? can they not reform?
V-ing form
can I not be reforming? can you not be reforming? can she not be reforming? can we not be reforming? can you not be reforming? can they not be reforming?
Perfect
can I not have reformed? can you not have reformed? can she not have reformed? can we not have reformed? can you not have reformed? can they not have reformed?
V-ing perfect
can I not have been reforming? can you not have been reforming? can she not have been reforming? can we not have been reforming? can you not have been reforming? can they not have been reforming?