must disseise
Regular verb: disseise - disseised- disseised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disseise
you must disseise
he must disseise
we must disseise
you must disseise
they must disseise 	I must be disseising
you must be disseising
he must be disseising
we must be disseising
you must be disseising
they must be disseising	I must have disseised
you must have disseised
he must have disseised
we must have disseised
you must have disseised
they must have disseised	I must have been disseising
you must have been disseising
he must have been disseising
we must have been disseising
you must have been disseising
they must have been disseising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't disseise
you mustn't disseise
he mustn't disseise
we mustn't disseise
you mustn't disseise
they mustn't disseise 	I mustn't be disseising
you mustn't be disseising
he mustn't be disseising
we mustn't be disseising
you mustn't be disseising
they mustn't be disseising	I mustn't have disseised
you mustn't have disseised
he mustn't have disseised
we mustn't have disseised
you mustn't have disseised
they mustn't have disseised	I mustn't have been disseising
you mustn't have been disseising
he mustn't have been disseising
we mustn't have been disseising
you mustn't have been disseising
they mustn't have been disseising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disseise?
must you disseise?
must he disseise?
must we disseise?
must you disseise?
must they disseise? 	must I be disseising?
must you be disseising?
must he be disseising?
must we be disseising?
must you be disseising?
must they be disseising? 	must I have disseised?
must you have disseised?
must he have disseised?
must we have disseised?
must you have disseised?
must they have disseised? 	must I have been disseising?
must you have been disseising?
must he have been disseising?
must we have been disseising?
must you have been disseising?
must they have been disseising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I disseise?
mustn't you disseise?
mustn't he disseise?
mustn't we disseise?
mustn't you disseise?
mustn't they disseise? 	mustn't I be disseising?
mustn't you be disseising?
mustn't he be disseising?
mustn't we be disseising?
mustn't you be disseising?
mustn't they be disseising? 	mustn't I have disseised?
mustn't you have disseised?
mustn't he have disseised?
mustn't we have disseised?
mustn't you have disseised?
mustn't they have disseised? 	mustn't I have been disseising?
mustn't you have been disseising?
mustn't he have been disseising?
mustn't we have been disseising?
mustn't you have been disseising?
mustn't they have been disseising?