must roll
Verbo regular: roll - rolled- rolled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not roll
you must not roll
he must not roll
we must not roll
you must not roll
they must not roll 	I must not be rolling
you must not be rolling
he must not be rolling
we must not be rolling
you must not be rolling
they must not be rolling	I must not have rolled
you must not have rolled
he must not have rolled
we must not have rolled
you must not have rolled
they must not have rolled	I must not have been rolling
you must not have been rolling
he must not have been rolling
we must not have been rolling
you must not have been rolling
they must not have been rolling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not roll?
must you not roll?
must he not roll?
must we not roll?
must you not roll?
must they not roll? 	must I not be rolling?
must you not be rolling?
must he not be rolling?
must we not be rolling?
must you not be rolling?
must they not be rolling? 	must I not have rolled?
must you not have rolled?
must he not have rolled?
must we not have rolled?
must you not have rolled?
must they not have rolled? 	must I not have been rolling?
must you not have been rolling?
must he not have been rolling?
must we not have been rolling?
must you not have been rolling?
must they not have been rolling?