I must permit you must permit she must permit we must permit you must permit they must permit
V-ing form
I must be permitting you must be permitting she must be permitting we must be permitting you must be permitting they must be permitting
Perfect
I must have permitted you must have permitted she must have permitted we must have permitted you must have permitted they must have permitted
V-ing perfect
I must have been permitting you must have been permitting she must have been permitting we must have been permitting you must have been permitting they must have been permitting
Negation
Simple form
I mustn't permit you mustn't permit she mustn't permit we mustn't permit you mustn't permit they mustn't permit
V-ing form
I mustn't be permitting you mustn't be permitting she mustn't be permitting we mustn't be permitting you mustn't be permitting they mustn't be permitting
Perfect
I mustn't have permitted you mustn't have permitted she mustn't have permitted we mustn't have permitted you mustn't have permitted they mustn't have permitted
V-ing perfect
I mustn't have been permitting you mustn't have been permitting she mustn't have been permitting we mustn't have been permitting you mustn't have been permitting they mustn't have been permitting
Interrogative form
Simple form
must I permit? must you permit? must she permit? must we permit? must you permit? must they permit?
V-ing form
must I be permitting? must you be permitting? must she be permitting? must we be permitting? must you be permitting? must they be permitting?
Perfect
must I have permitted? must you have permitted? must she have permitted? must we have permitted? must you have permitted? must they have permitted?
V-ing perfect
must I have been permitting? must you have been permitting? must she have been permitting? must we have been permitting? must you have been permitting? must they have been permitting?
Interro-negative form
Simple form
mustn't I permit? mustn't you permit? mustn't she permit? mustn't we permit? mustn't you permit? mustn't they permit?
V-ing form
mustn't I be permitting? mustn't you be permitting? mustn't she be permitting? mustn't we be permitting? mustn't you be permitting? mustn't they be permitting?
Perfect
mustn't I have permitted? mustn't you have permitted? mustn't she have permitted? mustn't we have permitted? mustn't you have permitted? mustn't they have permitted?
V-ing perfect
mustn't I have been permitting? mustn't you have been permitting? mustn't she have been permitting? mustn't we have been permitting? mustn't you have been permitting? mustn't they have been permitting?