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 can't regulate you can't regulate she can't regulate we can't regulate you can't regulate they can't regulate
V-ing form
I can't be regulating you can't be regulating she can't be regulating we can't be regulating you can't be regulating they can't be regulating
Perfect
I can't have regulated you can't have regulated she can't have regulated we can't have regulated you can't have regulated they can't have regulated
V-ing perfect
I can't have been regulating you can't have been regulating she can't have been regulating we can't have been regulating you can't have been regulating they can't 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't I regulate? can't you regulate? can't she regulate? can't we regulate? can't you regulate? can't they regulate?
V-ing form
can't I be regulating? can't you be regulating? can't she be regulating? can't we be regulating? can't you be regulating? can't they be regulating?
Perfect
can't I have regulated? can't you have regulated? can't she have regulated? can't we have regulated? can't you have regulated? can't they have regulated?
V-ing perfect
can't I have been regulating? can't you have been regulating? can't she have been regulating? can't we have been regulating? can't you have been regulating? can't they have been regulating?