must disburden
Regular verb: disburden - disburdened- disburdened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disburden
you must disburden
she must disburden
we must disburden
you must disburden
they must disburden 	I must be disburdening
you must be disburdening
she must be disburdening
we must be disburdening
you must be disburdening
they must be disburdening	I must have disburdened
you must have disburdened
she must have disburdened
we must have disburdened
you must have disburdened
they must have disburdened	I must have been disburdening
you must have been disburdening
she must have been disburdening
we must have been disburdening
you must have been disburdening
they must have been disburdening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't disburden
you mustn't disburden
she mustn't disburden
we mustn't disburden
you mustn't disburden
they mustn't disburden 	I mustn't be disburdening
you mustn't be disburdening
she mustn't be disburdening
we mustn't be disburdening
you mustn't be disburdening
they mustn't be disburdening	I mustn't have disburdened
you mustn't have disburdened
she mustn't have disburdened
we mustn't have disburdened
you mustn't have disburdened
they mustn't have disburdened	I mustn't have been disburdening
you mustn't have been disburdening
she mustn't have been disburdening
we mustn't have been disburdening
you mustn't have been disburdening
they mustn't have been disburdening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disburden?
must you disburden?
must she disburden?
must we disburden?
must you disburden?
must they disburden? 	must I be disburdening?
must you be disburdening?
must she be disburdening?
must we be disburdening?
must you be disburdening?
must they be disburdening? 	must I have disburdened?
must you have disburdened?
must she have disburdened?
must we have disburdened?
must you have disburdened?
must they have disburdened? 	must I have been disburdening?
must you have been disburdening?
must she have been disburdening?
must we have been disburdening?
must you have been disburdening?
must they have been disburdening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I disburden?
mustn't you disburden?
mustn't she disburden?
mustn't we disburden?
mustn't you disburden?
mustn't they disburden? 	mustn't I be disburdening?
mustn't you be disburdening?
mustn't she be disburdening?
mustn't we be disburdening?
mustn't you be disburdening?
mustn't they be disburdening? 	mustn't I have disburdened?
mustn't you have disburdened?
mustn't she have disburdened?
mustn't we have disburdened?
mustn't you have disburdened?
mustn't they have disburdened? 	mustn't I have been disburdening?
mustn't you have been disburdening?
mustn't she have been disburdening?
mustn't we have been disburdening?
mustn't you have been disburdening?
mustn't they have been disburdening?