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 must not fair
you must not fair
she must not fair
we must not fair
you must not fair
they must not fair 	I must not be fairing
you must not be fairing
she must not be fairing
we must not be fairing
you must not be fairing
they must not be fairing	I must not have faired
you must not have faired
she must not have faired
we must not have faired
you must not have faired
they must not have faired	I must not have been fairing
you must not have been fairing
she must not have been fairing
we must not have been fairing
you must not have been fairing
they must not 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 	
must I not fair?
must you not fair?
must she not fair?
must we not fair?
must you not fair?
must they not fair? 	must I not be fairing?
must you not be fairing?
must she not be fairing?
must we not be fairing?
must you not be fairing?
must they not be fairing? 	must I not have faired?
must you not have faired?
must she not have faired?
must we not have faired?
must you not have faired?
must they not have faired? 	must I not have been fairing?
must you not have been fairing?
must she not have been fairing?
must we not have been fairing?
must you not have been fairing?
must they not have been fairing?