Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must offer sth you must offer sth he must offer sth we must offer sth you must offer sth they must offer sth
V-ing form
I must be offer sthing you must be offer sthing he must be offer sthing we must be offer sthing you must be offer sthing they must be offer sthing
Perfect
I must have offer sthed you must have offer sthed he must have offer sthed we must have offer sthed you must have offer sthed they must have offer sthed
V-ing perfect
I must have been offer sthing you must have been offer sthing he must have been offer sthing we must have been offer sthing you must have been offer sthing they must have been offer sthing
Negation
Simple form
I must not offer sth you must not offer sth he must not offer sth we must not offer sth you must not offer sth they must not offer sth
V-ing form
I must not be offer sthing you must not be offer sthing he must not be offer sthing we must not be offer sthing you must not be offer sthing they must not be offer sthing
Perfect
I must not have offer sthed you must not have offer sthed he must not have offer sthed we must not have offer sthed you must not have offer sthed they must not have offer sthed
V-ing perfect
I must not have been offer sthing you must not have been offer sthing he must not have been offer sthing we must not have been offer sthing you must not have been offer sthing they must not have been offer sthing
Interrogative form
Simple form
must I offer sth? must you offer sth? must he offer sth? must we offer sth? must you offer sth? must they offer sth?
V-ing form
must I be offer sthing? must you be offer sthing? must he be offer sthing? must we be offer sthing? must you be offer sthing? must they be offer sthing?
Perfect
must I have offer sthed? must you have offer sthed? must he have offer sthed? must we have offer sthed? must you have offer sthed? must they have offer sthed?
V-ing perfect
must I have been offer sthing? must you have been offer sthing? must he have been offer sthing? must we have been offer sthing? must you have been offer sthing? must they have been offer sthing?
Interro-negative form
Simple form
must I not offer sth? must you not offer sth? must he not offer sth? must we not offer sth? must you not offer sth? must they not offer sth?
V-ing form
must I not be offer sthing? must you not be offer sthing? must he not be offer sthing? must we not be offer sthing? must you not be offer sthing? must they not be offer sthing?
Perfect
must I not have offer sthed? must you not have offer sthed? must he not have offer sthed? must we not have offer sthed? must you not have offer sthed? must they not have offer sthed?
V-ing perfect
must I not have been offer sthing? must you not have been offer sthing? must he not have been offer sthing? must we not have been offer sthing? must you not have been offer sthing? must they not have been offer sthing?