could front
Verbo regular: front - fronted- fronted

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

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

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

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