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