I can forbid you can forbid he can forbid we can forbid you can forbid they can forbid
V-ing form
I can be forbidding you can be forbidding he can be forbidding we can be forbidding you can be forbidding they can be forbidding
Perfect
I can have forbid, forbidden you can have forbid, forbidden he can have forbid, forbidden we can have forbid, forbidden you can have forbid, forbidden they can have forbid, forbidden
V-ing perfect
I can have been forbidding you can have been forbidding he can have been forbidding we can have been forbidding you can have been forbidding they can have been forbidding
Negation
Simple form
I can't forbid you can't forbid he can't forbid we can't forbid you can't forbid they can't forbid
V-ing form
I can't be forbidding you can't be forbidding he can't be forbidding we can't be forbidding you can't be forbidding they can't be forbidding
Perfect
I can't have forbid, forbidden you can't have forbid, forbidden he can't have forbid, forbidden we can't have forbid, forbidden you can't have forbid, forbidden they can't have forbid, forbidden
V-ing perfect
I can't have been forbidding you can't have been forbidding he can't have been forbidding we can't have been forbidding you can't have been forbidding they can't have been forbidding
Interrogative form
Simple form
can I forbid? can you forbid? can he forbid? can we forbid? can you forbid? can they forbid?
V-ing form
can I be forbidding? can you be forbidding? can he be forbidding? can we be forbidding? can you be forbidding? can they be forbidding?
Perfect
can I have forbid, forbidden? can you have forbid, forbidden? can he have forbid, forbidden? can we have forbid, forbidden? can you have forbid, forbidden? can they have forbid, forbidden?
V-ing perfect
can I have been forbidding? can you have been forbidding? can he have been forbidding? can we have been forbidding? can you have been forbidding? can they have been forbidding?
Interro-negative form
Simple form
can't I forbid? can't you forbid? can't he forbid? can't we forbid? can't you forbid? can't they forbid?
V-ing form
can't I be forbidding? can't you be forbidding? can't he be forbidding? can't we be forbidding? can't you be forbidding? can't they be forbidding?
Perfect
can't I have forbid, forbidden? can't you have forbid, forbidden? can't he have forbid, forbidden? can't we have forbid, forbidden? can't you have forbid, forbidden? can't they have forbid, forbidden?
V-ing perfect
can't I have been forbidding? can't you have been forbidding? can't he have been forbidding? can't we have been forbidding? can't you have been forbidding? can't they have been forbidding?