must disuse
Regular verb: disuse - disused- disused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disuse
you must disuse
he must disuse
we must disuse
you must disuse
they must disuse 	I must be disusing
you must be disusing
he must be disusing
we must be disusing
you must be disusing
they must be disusing	I must have disused
you must have disused
he must have disused
we must have disused
you must have disused
they must have disused	I must have been disusing
you must have been disusing
he must have been disusing
we must have been disusing
you must have been disusing
they must have been disusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't disuse
you mustn't disuse
he mustn't disuse
we mustn't disuse
you mustn't disuse
they mustn't disuse 	I mustn't be disusing
you mustn't be disusing
he mustn't be disusing
we mustn't be disusing
you mustn't be disusing
they mustn't be disusing	I mustn't have disused
you mustn't have disused
he mustn't have disused
we mustn't have disused
you mustn't have disused
they mustn't have disused	I mustn't have been disusing
you mustn't have been disusing
he mustn't have been disusing
we mustn't have been disusing
you mustn't have been disusing
they mustn't have been disusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disuse?
must you disuse?
must he disuse?
must we disuse?
must you disuse?
must they disuse? 	must I be disusing?
must you be disusing?
must he be disusing?
must we be disusing?
must you be disusing?
must they be disusing? 	must I have disused?
must you have disused?
must he have disused?
must we have disused?
must you have disused?
must they have disused? 	must I have been disusing?
must you have been disusing?
must he have been disusing?
must we have been disusing?
must you have been disusing?
must they have been disusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I disuse?
mustn't you disuse?
mustn't he disuse?
mustn't we disuse?
mustn't you disuse?
mustn't they disuse? 	mustn't I be disusing?
mustn't you be disusing?
mustn't he be disusing?
mustn't we be disusing?
mustn't you be disusing?
mustn't they be disusing? 	mustn't I have disused?
mustn't you have disused?
mustn't he have disused?
mustn't we have disused?
mustn't you have disused?
mustn't they have disused? 	mustn't I have been disusing?
mustn't you have been disusing?
mustn't he have been disusing?
mustn't we have been disusing?
mustn't you have been disusing?
mustn't they have been disusing?