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