must scrum
Regular verb: scrum - scrumed- scrumed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must scrum
you must scrum
he must scrum
we must scrum
you must scrum
they must scrum 	I must be scruming
you must be scruming
he must be scruming
we must be scruming
you must be scruming
they must be scruming	I must have scrumed
you must have scrumed
he must have scrumed
we must have scrumed
you must have scrumed
they must have scrumed	I must have been scruming
you must have been scruming
he must have been scruming
we must have been scruming
you must have been scruming
they must have been scruming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't scrum
you mustn't scrum
he mustn't scrum
we mustn't scrum
you mustn't scrum
they mustn't scrum 	I mustn't be scruming
you mustn't be scruming
he mustn't be scruming
we mustn't be scruming
you mustn't be scruming
they mustn't be scruming	I mustn't have scrumed
you mustn't have scrumed
he mustn't have scrumed
we mustn't have scrumed
you mustn't have scrumed
they mustn't have scrumed	I mustn't have been scruming
you mustn't have been scruming
he mustn't have been scruming
we mustn't have been scruming
you mustn't have been scruming
they mustn't have been scruming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I scrum?
must you scrum?
must he scrum?
must we scrum?
must you scrum?
must they scrum? 	must I be scruming?
must you be scruming?
must he be scruming?
must we be scruming?
must you be scruming?
must they be scruming? 	must I have scrumed?
must you have scrumed?
must he have scrumed?
must we have scrumed?
must you have scrumed?
must they have scrumed? 	must I have been scruming?
must you have been scruming?
must he have been scruming?
must we have been scruming?
must you have been scruming?
must they have been scruming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I scrum?
mustn't you scrum?
mustn't he scrum?
mustn't we scrum?
mustn't you scrum?
mustn't they scrum? 	mustn't I be scruming?
mustn't you be scruming?
mustn't he be scruming?
mustn't we be scruming?
mustn't you be scruming?
mustn't they be scruming? 	mustn't I have scrumed?
mustn't you have scrumed?
mustn't he have scrumed?
mustn't we have scrumed?
mustn't you have scrumed?
mustn't they have scrumed? 	mustn't I have been scruming?
mustn't you have been scruming?
mustn't he have been scruming?
mustn't we have been scruming?
mustn't you have been scruming?
mustn't they have been scruming?