English verb conjugation
MUST FATHER

Regular verb: father - fathered - fathered

Affirmation

Simple form	V-ing form
I must father you must father he must father we must father you must father they must father	I must be fathering you must be fathering he must be fathering we must be fathering you must be fathering they must be fathering
Perfect	V-ing perfect
I must have fathered you must have fathered he must have fathered we must have fathered you must have fathered they must have fathered	I must have been fathering you must have been fathering he must have been fathering we must have been fathering you must have been fathering they must have been fathering

Negation

Simple form	V-ing form
I mustn't father you mustn't father he mustn't father we mustn't father you mustn't father they mustn't father	I mustn't be fathering you mustn't be fathering he mustn't be fathering we mustn't be fathering you mustn't be fathering they mustn't be fathering
Perfect	V-ing perfect
I mustn't have fathered you mustn't have fathered he mustn't have fathered we mustn't have fathered you mustn't have fathered they mustn't have fathered	I mustn't have been fathering you mustn't have been fathering he mustn't have been fathering we mustn't have been fathering you mustn't have been fathering they mustn't have been fathering

Interrogative form

Simple form	V-ing form
must I father? must you father? must he father? must we father? must you father? must they father?	must I be fathering? must you be fathering? must he be fathering? must we be fathering? must you be fathering? must they be fathering?
Perfect	V-ing perfect
must I have fathered? must you have fathered? must he have fathered? must we have fathered? must you have fathered? must they have fathered?	must I have been fathering? must you have been fathering? must he have been fathering? must we have been fathering? must you have been fathering? must they have been fathering?

Interro-negative form

Simple form	V-ing form
mustn't I father? mustn't you father? mustn't he father? mustn't we father? mustn't you father? mustn't they father?	mustn't I be fathering? mustn't you be fathering? mustn't he be fathering? mustn't we be fathering? mustn't you be fathering? mustn't they be fathering?
Perfect	V-ing perfect
mustn't I have fathered? mustn't you have fathered? mustn't he have fathered? mustn't we have fathered? mustn't you have fathered? mustn't they have fathered?	mustn't I have been fathering? mustn't you have been fathering? mustn't he have been fathering? mustn't we have been fathering? mustn't you have been fathering? mustn't they have been fathering?