must fair
Verbo regular: fair - faired- faired

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must fair
you must fair
she must fair
we must fair
you must fair
they must fair 	I must be fairing
you must be fairing
she must be fairing
we must be fairing
you must be fairing
they must be fairing	I must have faired
you must have faired
she must have faired
we must have faired
you must have faired
they must have faired	I must have been fairing
you must have been fairing
she must have been fairing
we must have been fairing
you must have been fairing
they must have been fairing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't fair
you mustn't fair
she mustn't fair
we mustn't fair
you mustn't fair
they mustn't fair 	I mustn't be fairing
you mustn't be fairing
she mustn't be fairing
we mustn't be fairing
you mustn't be fairing
they mustn't be fairing	I mustn't have faired
you mustn't have faired
she mustn't have faired
we mustn't have faired
you mustn't have faired
they mustn't have faired	I mustn't have been fairing
you mustn't have been fairing
she mustn't have been fairing
we mustn't have been fairing
you mustn't have been fairing
they mustn't have been fairing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I fair?
must you fair?
must she fair?
must we fair?
must you fair?
must they fair? 	must I be fairing?
must you be fairing?
must she be fairing?
must we be fairing?
must you be fairing?
must they be fairing? 	must I have faired?
must you have faired?
must she have faired?
must we have faired?
must you have faired?
must they have faired? 	must I have been fairing?
must you have been fairing?
must she have been fairing?
must we have been fairing?
must you have been fairing?
must they have been fairing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I fair?
mustn't you fair?
mustn't she fair?
mustn't we fair?
mustn't you fair?
mustn't they fair? 	mustn't I be fairing?
mustn't you be fairing?
mustn't she be fairing?
mustn't we be fairing?
mustn't you be fairing?
mustn't they be fairing? 	mustn't I have faired?
mustn't you have faired?
mustn't she have faired?
mustn't we have faired?
mustn't you have faired?
mustn't they have faired? 	mustn't I have been fairing?
mustn't you have been fairing?
mustn't she have been fairing?
mustn't we have been fairing?
mustn't you have been fairing?
mustn't they have been fairing?