must fuck
Verbo regular: fuck - fucked- fucked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must fuck
you must fuck
she must fuck
we must fuck
you must fuck
they must fuck 	I must be fucking
you must be fucking
she must be fucking
we must be fucking
you must be fucking
they must be fucking	I must have fucked
you must have fucked
she must have fucked
we must have fucked
you must have fucked
they must have fucked	I must have been fucking
you must have been fucking
she must have been fucking
we must have been fucking
you must have been fucking
they must have been fucking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not fuck
you must not fuck
she must not fuck
we must not fuck
you must not fuck
they must not fuck 	I must not be fucking
you must not be fucking
she must not be fucking
we must not be fucking
you must not be fucking
they must not be fucking	I must not have fucked
you must not have fucked
she must not have fucked
we must not have fucked
you must not have fucked
they must not have fucked	I must not have been fucking
you must not have been fucking
she must not have been fucking
we must not have been fucking
you must not have been fucking
they must not have been fucking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I fuck?
must you fuck?
must she fuck?
must we fuck?
must you fuck?
must they fuck? 	must I be fucking?
must you be fucking?
must she be fucking?
must we be fucking?
must you be fucking?
must they be fucking? 	must I have fucked?
must you have fucked?
must she have fucked?
must we have fucked?
must you have fucked?
must they have fucked? 	must I have been fucking?
must you have been fucking?
must she have been fucking?
must we have been fucking?
must you have been fucking?
must they have been fucking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not fuck?
must you not fuck?
must she not fuck?
must we not fuck?
must you not fuck?
must they not fuck? 	must I not be fucking?
must you not be fucking?
must she not be fucking?
must we not be fucking?
must you not be fucking?
must they not be fucking? 	must I not have fucked?
must you not have fucked?
must she not have fucked?
must we not have fucked?
must you not have fucked?
must they not have fucked? 	must I not have been fucking?
must you not have been fucking?
must she not have been fucking?
must we not have been fucking?
must you not have been fucking?
must they not have been fucking?