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