I can regulate you can regulate she can regulate we can regulate you can regulate they can regulate
V-ing form
I can be regulating you can be regulating she can be regulating we can be regulating you can be regulating they can be regulating
Perfect
I can have regulated you can have regulated she can have regulated we can have regulated you can have regulated they can have regulated
V-ing perfect
I can have been regulating you can have been regulating she can have been regulating we can have been regulating you can have been regulating they can have been regulating
Negation
Simple form
I cannot regulate you cannot regulate she cannot regulate we cannot regulate you cannot regulate they cannot regulate
V-ing form
I cannot be regulating you cannot be regulating she cannot be regulating we cannot be regulating you cannot be regulating they cannot be regulating
Perfect
I cannot have regulated you cannot have regulated she cannot have regulated we cannot have regulated you cannot have regulated they cannot have regulated
V-ing perfect
I cannot have been regulating you cannot have been regulating she cannot have been regulating we cannot have been regulating you cannot have been regulating they cannot have been regulating
Interrogative form
Simple form
can I regulate? can you regulate? can she regulate? can we regulate? can you regulate? can they regulate?
V-ing form
can I be regulating? can you be regulating? can she be regulating? can we be regulating? can you be regulating? can they be regulating?
Perfect
can I have regulated? can you have regulated? can she have regulated? can we have regulated? can you have regulated? can they have regulated?
V-ing perfect
can I have been regulating? can you have been regulating? can she have been regulating? can we have been regulating? can you have been regulating? can they have been regulating?
Interro-negative form
Simple form
can I not regulate? can you not regulate? can she not regulate? can we not regulate? can you not regulate? can they not regulate?
V-ing form
can I not be regulating? can you not be regulating? can she not be regulating? can we not be regulating? can you not be regulating? can they not be regulating?
Perfect
can I not have regulated? can you not have regulated? can she not have regulated? can we not have regulated? can you not have regulated? can they not have regulated?
V-ing perfect
can I not have been regulating? can you not have been regulating? can she not have been regulating? can we not have been regulating? can you not have been regulating? can they not have been regulating?