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