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