English verb conjugation
MUST OFFER

Regular verb: offer - offered - offered

Affirmation

Simple form	V-ing form
I must offer you must offer he must offer we must offer you must offer they must offer	I must be offering you must be offering he must be offering we must be offering you must be offering they must be offering
Perfect	V-ing perfect
I must have offered you must have offered he must have offered we must have offered you must have offered they must have offered	I must have been offering you must have been offering he must have been offering we must have been offering you must have been offering they must have been offering

Negation

Simple form	V-ing form
I mustn't offer you mustn't offer he mustn't offer we mustn't offer you mustn't offer they mustn't offer	I mustn't be offering you mustn't be offering he mustn't be offering we mustn't be offering you mustn't be offering they mustn't be offering
Perfect	V-ing perfect
I mustn't have offered you mustn't have offered he mustn't have offered we mustn't have offered you mustn't have offered they mustn't have offered	I mustn't have been offering you mustn't have been offering he mustn't have been offering we mustn't have been offering you mustn't have been offering they mustn't have been offering

Interrogative form

Simple form	V-ing form
must I offer? must you offer? must he offer? must we offer? must you offer? must they offer?	must I be offering? must you be offering? must he be offering? must we be offering? must you be offering? must they be offering?
Perfect	V-ing perfect
must I have offered? must you have offered? must he have offered? must we have offered? must you have offered? must they have offered?	must I have been offering? must you have been offering? must he have been offering? must we have been offering? must you have been offering? must they have been offering?

Interro-negative form

Simple form	V-ing form
mustn't I offer? mustn't you offer? mustn't he offer? mustn't we offer? mustn't you offer? mustn't they offer?	mustn't I be offering? mustn't you be offering? mustn't he be offering? mustn't we be offering? mustn't you be offering? mustn't they be offering?
Perfect	V-ing perfect
mustn't I have offered? mustn't you have offered? mustn't he have offered? mustn't we have offered? mustn't you have offered? mustn't they have offered?	mustn't I have been offering? mustn't you have been offering? mustn't he have been offering? mustn't we have been offering? mustn't you have been offering? mustn't they have been offering?