must front
Verbo regular: front - fronted- fronted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must front
you must front
he must front
we must front
you must front
they must front 	I must be fronting
you must be fronting
he must be fronting
we must be fronting
you must be fronting
they must be fronting	I must have fronted
you must have fronted
he must have fronted
we must have fronted
you must have fronted
they must have fronted	I must have been fronting
you must have been fronting
he must have been fronting
we must have been fronting
you must have been fronting
they must have been fronting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not front
you must not front
he must not front
we must not front
you must not front
they must not front 	I must not be fronting
you must not be fronting
he must not be fronting
we must not be fronting
you must not be fronting
they must not be fronting	I must not have fronted
you must not have fronted
he must not have fronted
we must not have fronted
you must not have fronted
they must not have fronted	I must not have been fronting
you must not have been fronting
he must not have been fronting
we must not have been fronting
you must not have been fronting
they must not have been fronting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I front?
must you front?
must he front?
must we front?
must you front?
must they front? 	must I be fronting?
must you be fronting?
must he be fronting?
must we be fronting?
must you be fronting?
must they be fronting? 	must I have fronted?
must you have fronted?
must he have fronted?
must we have fronted?
must you have fronted?
must they have fronted? 	must I have been fronting?
must you have been fronting?
must he have been fronting?
must we have been fronting?
must you have been fronting?
must they have been fronting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not front?
must you not front?
must he not front?
must we not front?
must you not front?
must they not front? 	must I not be fronting?
must you not be fronting?
must he not be fronting?
must we not be fronting?
must you not be fronting?
must they not be fronting? 	must I not have fronted?
must you not have fronted?
must he not have fronted?
must we not have fronted?
must you not have fronted?
must they not have fronted? 	must I not have been fronting?
must you not have been fronting?
must he not have been fronting?
must we not have been fronting?
must you not have been fronting?
must they not have been fronting?