must license
Verbo regular: license - licensed- licensed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must license
you must license
he must license
we must license
you must license
they must license 	I must be licensing
you must be licensing
he must be licensing
we must be licensing
you must be licensing
they must be licensing	I must have licensed
you must have licensed
he must have licensed
we must have licensed
you must have licensed
they must have licensed	I must have been licensing
you must have been licensing
he must have been licensing
we must have been licensing
you must have been licensing
they must have been licensing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not license
you must not license
he must not license
we must not license
you must not license
they must not license 	I must not be licensing
you must not be licensing
he must not be licensing
we must not be licensing
you must not be licensing
they must not be licensing	I must not have licensed
you must not have licensed
he must not have licensed
we must not have licensed
you must not have licensed
they must not have licensed	I must not have been licensing
you must not have been licensing
he must not have been licensing
we must not have been licensing
you must not have been licensing
they must not have been licensing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I license?
must you license?
must he license?
must we license?
must you license?
must they license? 	must I be licensing?
must you be licensing?
must he be licensing?
must we be licensing?
must you be licensing?
must they be licensing? 	must I have licensed?
must you have licensed?
must he have licensed?
must we have licensed?
must you have licensed?
must they have licensed? 	must I have been licensing?
must you have been licensing?
must he have been licensing?
must we have been licensing?
must you have been licensing?
must they have been licensing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not license?
must you not license?
must he not license?
must we not license?
must you not license?
must they not license? 	must I not be licensing?
must you not be licensing?
must he not be licensing?
must we not be licensing?
must you not be licensing?
must they not be licensing? 	must I not have licensed?
must you not have licensed?
must he not have licensed?
must we not have licensed?
must you not have licensed?
must they not have licensed? 	must I not have been licensing?
must you not have been licensing?
must he not have been licensing?
must we not have been licensing?
must you not have been licensing?
must they not have been licensing?