must authorize
Regular verb: authorize - authorized- authorized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must authorize
you must authorize
she must authorize
we must authorize
you must authorize
they must authorize 	I must be authorizing
you must be authorizing
she must be authorizing
we must be authorizing
you must be authorizing
they must be authorizing	I must have authorized
you must have authorized
she must have authorized
we must have authorized
you must have authorized
they must have authorized	I must have been authorizing
you must have been authorizing
she must have been authorizing
we must have been authorizing
you must have been authorizing
they must have been authorizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't authorize
you mustn't authorize
she mustn't authorize
we mustn't authorize
you mustn't authorize
they mustn't authorize 	I mustn't be authorizing
you mustn't be authorizing
she mustn't be authorizing
we mustn't be authorizing
you mustn't be authorizing
they mustn't be authorizing	I mustn't have authorized
you mustn't have authorized
she mustn't have authorized
we mustn't have authorized
you mustn't have authorized
they mustn't have authorized	I mustn't have been authorizing
you mustn't have been authorizing
she mustn't have been authorizing
we mustn't have been authorizing
you mustn't have been authorizing
they mustn't have been authorizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I authorize?
must you authorize?
must she authorize?
must we authorize?
must you authorize?
must they authorize? 	must I be authorizing?
must you be authorizing?
must she be authorizing?
must we be authorizing?
must you be authorizing?
must they be authorizing? 	must I have authorized?
must you have authorized?
must she have authorized?
must we have authorized?
must you have authorized?
must they have authorized? 	must I have been authorizing?
must you have been authorizing?
must she have been authorizing?
must we have been authorizing?
must you have been authorizing?
must they have been authorizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I authorize?
mustn't you authorize?
mustn't she authorize?
mustn't we authorize?
mustn't you authorize?
mustn't they authorize? 	mustn't I be authorizing?
mustn't you be authorizing?
mustn't she be authorizing?
mustn't we be authorizing?
mustn't you be authorizing?
mustn't they be authorizing? 	mustn't I have authorized?
mustn't you have authorized?
mustn't she have authorized?
mustn't we have authorized?
mustn't you have authorized?
mustn't they have authorized? 	mustn't I have been authorizing?
mustn't you have been authorizing?
mustn't she have been authorizing?
mustn't we have been authorizing?
mustn't you have been authorizing?
mustn't they have been authorizing?