must cuff
Verbo regular: cuff - cuffed- cuffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cuff
you must cuff
he must cuff
we must cuff
you must cuff
they must cuff 	I must be cuffing
you must be cuffing
he must be cuffing
we must be cuffing
you must be cuffing
they must be cuffing	I must have cuffed
you must have cuffed
he must have cuffed
we must have cuffed
you must have cuffed
they must have cuffed	I must have been cuffing
you must have been cuffing
he must have been cuffing
we must have been cuffing
you must have been cuffing
they must have been cuffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not cuff
you must not cuff
he must not cuff
we must not cuff
you must not cuff
they must not cuff 	I must not be cuffing
you must not be cuffing
he must not be cuffing
we must not be cuffing
you must not be cuffing
they must not be cuffing	I must not have cuffed
you must not have cuffed
he must not have cuffed
we must not have cuffed
you must not have cuffed
they must not have cuffed	I must not have been cuffing
you must not have been cuffing
he must not have been cuffing
we must not have been cuffing
you must not have been cuffing
they must not have been cuffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cuff?
must you cuff?
must he cuff?
must we cuff?
must you cuff?
must they cuff? 	must I be cuffing?
must you be cuffing?
must he be cuffing?
must we be cuffing?
must you be cuffing?
must they be cuffing? 	must I have cuffed?
must you have cuffed?
must he have cuffed?
must we have cuffed?
must you have cuffed?
must they have cuffed? 	must I have been cuffing?
must you have been cuffing?
must he have been cuffing?
must we have been cuffing?
must you have been cuffing?
must they have been cuffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not cuff?
must you not cuff?
must he not cuff?
must we not cuff?
must you not cuff?
must they not cuff? 	must I not be cuffing?
must you not be cuffing?
must he not be cuffing?
must we not be cuffing?
must you not be cuffing?
must they not be cuffing? 	must I not have cuffed?
must you not have cuffed?
must he not have cuffed?
must we not have cuffed?
must you not have cuffed?
must they not have cuffed? 	must I not have been cuffing?
must you not have been cuffing?
must he not have been cuffing?
must we not have been cuffing?
must you not have been cuffing?
must they not have been cuffing?