English verb conjugation
MUST OFFEND

Regular verb: offend - offended - offended

Affirmation

Simple form	V-ing form
I must offend you must offend he must offend we must offend you must offend they must offend	I must be offending you must be offending he must be offending we must be offending you must be offending they must be offending
Perfect	V-ing perfect
I must have offended you must have offended he must have offended we must have offended you must have offended they must have offended	I must have been offending you must have been offending he must have been offending we must have been offending you must have been offending they must have been offending

Negation

Simple form	V-ing form
I mustn't offend you mustn't offend he mustn't offend we mustn't offend you mustn't offend they mustn't offend	I mustn't be offending you mustn't be offending he mustn't be offending we mustn't be offending you mustn't be offending they mustn't be offending
Perfect	V-ing perfect
I mustn't have offended you mustn't have offended he mustn't have offended we mustn't have offended you mustn't have offended they mustn't have offended	I mustn't have been offending you mustn't have been offending he 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	V-ing form
must I offend? must you offend? must he offend? must we offend? must you offend? must they offend?	must I be offending? must you be offending? must he be offending? must we be offending? must you be offending? must they be offending?
Perfect	V-ing perfect
must I have offended? must you have offended? must he have offended? must we have offended? must you have offended? must they have offended?	must I have been offending? must you have been offending? must he have been offending? must we have been offending? must you have been offending? must they have been offending?

Interro-negative form

Simple form	V-ing form
mustn't I offend? mustn't you offend? mustn't he offend? mustn't we offend? mustn't you offend? mustn't they offend?	mustn't I be offending? mustn't you be offending? mustn't he be offending? mustn't we be offending? mustn't you be offending? mustn't they be offending?
Perfect	V-ing perfect
mustn't I have offended? mustn't you have offended? mustn't he have offended? mustn't we have offended? mustn't you have offended? mustn't they have offended?	mustn't I have been offending? mustn't you have been offending? mustn't he have been offending? mustn't we have been offending? mustn't you have been offending? mustn't they have been offending?