must license
Regular verb: license - licensed- licensed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't license
you mustn't license
he mustn't license
we mustn't license
you mustn't license
they mustn't license 	I mustn't be licensing
you mustn't be licensing
he mustn't be licensing
we mustn't be licensing
you mustn't be licensing
they mustn't be licensing	I mustn't have licensed
you mustn't have licensed
he mustn't have licensed
we mustn't have licensed
you mustn't have licensed
they mustn't have licensed	I mustn't have been licensing
you mustn't have been licensing
he mustn't have been licensing
we mustn't have been licensing
you mustn't have been licensing
they mustn't have been licensing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I license?
mustn't you license?
mustn't he license?
mustn't we license?
mustn't you license?
mustn't they license? 	mustn't I be licensing?
mustn't you be licensing?
mustn't he be licensing?
mustn't we be licensing?
mustn't you be licensing?
mustn't they be licensing? 	mustn't I have licensed?
mustn't you have licensed?
mustn't he have licensed?
mustn't we have licensed?
mustn't you have licensed?
mustn't they have licensed? 	mustn't I have been licensing?
mustn't you have been licensing?
mustn't he have been licensing?
mustn't we have been licensing?
mustn't you have been licensing?
mustn't they have been licensing?