I can inform you can inform she can inform we can inform you can inform they can inform
V-ing form
I can be informing you can be informing she can be informing we can be informing you can be informing they can be informing
Perfect
I can have informed you can have informed she can have informed we can have informed you can have informed they can have informed
V-ing perfect
I can have been informing you can have been informing she can have been informing we can have been informing you can have been informing they can have been informing
Negation
Simple form
I cannot inform you cannot inform she cannot inform we cannot inform you cannot inform they cannot inform
V-ing form
I cannot be informing you cannot be informing she cannot be informing we cannot be informing you cannot be informing they cannot be informing
Perfect
I cannot have informed you cannot have informed she cannot have informed we cannot have informed you cannot have informed they cannot have informed
V-ing perfect
I cannot have been informing you cannot have been informing she cannot have been informing we cannot have been informing you cannot have been informing they cannot have been informing
Interrogative form
Simple form
can I inform? can you inform? can she inform? can we inform? can you inform? can they inform?
V-ing form
can I be informing? can you be informing? can she be informing? can we be informing? can you be informing? can they be informing?
Perfect
can I have informed? can you have informed? can she have informed? can we have informed? can you have informed? can they have informed?
V-ing perfect
can I have been informing? can you have been informing? can she have been informing? can we have been informing? can you have been informing? can they have been informing?
Interro-negative form
Simple form
can I not inform? can you not inform? can she not inform? can we not inform? can you not inform? can they not inform?
V-ing form
can I not be informing? can you not be informing? can she not be informing? can we not be informing? can you not be informing? can they not be informing?
Perfect
can I not have informed? can you not have informed? can she not have informed? can we not have informed? can you not have informed? can they not have informed?
V-ing perfect
can I not have been informing? can you not have been informing? can she not have been informing? can we not have been informing? can you not have been informing? can they not have been informing?