must roll
Regular verb: roll - rolled- rolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must roll
you must roll
he must roll
we must roll
you must roll
they must roll 	I must be rolling
you must be rolling
he must be rolling
we must be rolling
you must be rolling
they must be rolling	I must have rolled
you must have rolled
he must have rolled
we must have rolled
you must have rolled
they must have rolled	I must have been rolling
you must have been rolling
he must have been rolling
we must have been rolling
you must have been rolling
they must have been rolling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't roll
you mustn't roll
he mustn't roll
we mustn't roll
you mustn't roll
they mustn't roll 	I mustn't be rolling
you mustn't be rolling
he mustn't be rolling
we mustn't be rolling
you mustn't be rolling
they mustn't be rolling	I mustn't have rolled
you mustn't have rolled
he mustn't have rolled
we mustn't have rolled
you mustn't have rolled
they mustn't have rolled	I mustn't have been rolling
you mustn't have been rolling
he mustn't have been rolling
we mustn't have been rolling
you mustn't have been rolling
they mustn't have been rolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I roll?
must you roll?
must he roll?
must we roll?
must you roll?
must they roll? 	must I be rolling?
must you be rolling?
must he be rolling?
must we be rolling?
must you be rolling?
must they be rolling? 	must I have rolled?
must you have rolled?
must he have rolled?
must we have rolled?
must you have rolled?
must they have rolled? 	must I have been rolling?
must you have been rolling?
must he have been rolling?
must we have been rolling?
must you have been rolling?
must they have been rolling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I roll?
mustn't you roll?
mustn't he roll?
mustn't we roll?
mustn't you roll?
mustn't they roll? 	mustn't I be rolling?
mustn't you be rolling?
mustn't he be rolling?
mustn't we be rolling?
mustn't you be rolling?
mustn't they be rolling? 	mustn't I have rolled?
mustn't you have rolled?
mustn't he have rolled?
mustn't we have rolled?
mustn't you have rolled?
mustn't they have rolled? 	mustn't I have been rolling?
mustn't you have been rolling?
mustn't he have been rolling?
mustn't we have been rolling?
mustn't you have been rolling?
mustn't they have been rolling?