must disabuse
Regular verb: disabuse - disabused- disabused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disabuse
you must disabuse
she must disabuse
we must disabuse
you must disabuse
they must disabuse 	I must be disabusing
you must be disabusing
she must be disabusing
we must be disabusing
you must be disabusing
they must be disabusing	I must have disabused
you must have disabused
she must have disabused
we must have disabused
you must have disabused
they must have disabused	I must have been disabusing
you must have been disabusing
she must have been disabusing
we must have been disabusing
you must have been disabusing
they must have been disabusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't disabuse
you mustn't disabuse
she mustn't disabuse
we mustn't disabuse
you mustn't disabuse
they mustn't disabuse 	I mustn't be disabusing
you mustn't be disabusing
she mustn't be disabusing
we mustn't be disabusing
you mustn't be disabusing
they mustn't be disabusing	I mustn't have disabused
you mustn't have disabused
she mustn't have disabused
we mustn't have disabused
you mustn't have disabused
they mustn't have disabused	I mustn't have been disabusing
you mustn't have been disabusing
she mustn't have been disabusing
we mustn't have been disabusing
you mustn't have been disabusing
they mustn't have been disabusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disabuse?
must you disabuse?
must she disabuse?
must we disabuse?
must you disabuse?
must they disabuse? 	must I be disabusing?
must you be disabusing?
must she be disabusing?
must we be disabusing?
must you be disabusing?
must they be disabusing? 	must I have disabused?
must you have disabused?
must she have disabused?
must we have disabused?
must you have disabused?
must they have disabused? 	must I have been disabusing?
must you have been disabusing?
must she have been disabusing?
must we have been disabusing?
must you have been disabusing?
must they have been disabusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I disabuse?
mustn't you disabuse?
mustn't she disabuse?
mustn't we disabuse?
mustn't you disabuse?
mustn't they disabuse? 	mustn't I be disabusing?
mustn't you be disabusing?
mustn't she be disabusing?
mustn't we be disabusing?
mustn't you be disabusing?
mustn't they be disabusing? 	mustn't I have disabused?
mustn't you have disabused?
mustn't she have disabused?
mustn't we have disabused?
mustn't you have disabused?
mustn't they have disabused? 	mustn't I have been disabusing?
mustn't you have been disabusing?
mustn't she have been disabusing?
mustn't we have been disabusing?
mustn't you have been disabusing?
mustn't they have been disabusing?