can front
Verbo regular: front - fronted- fronted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can front
you can front
she can front
we can front
you can front
they can front 	I can be fronting
you can be fronting
she can be fronting
we can be fronting
you can be fronting
they can be fronting	I can have fronted
you can have fronted
she can have fronted
we can have fronted
you can have fronted
they can have fronted	I can have been fronting
you can have been fronting
she can have been fronting
we can have been fronting
you can have been fronting
they can have been fronting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot front
you cannot front
she cannot front
we cannot front
you cannot front
they cannot front 	I cannot be fronting
you cannot be fronting
she cannot be fronting
we cannot be fronting
you cannot be fronting
they cannot be fronting	I cannot have fronted
you cannot have fronted
she cannot have fronted
we cannot have fronted
you cannot have fronted
they cannot have fronted	I cannot have been fronting
you cannot have been fronting
she cannot have been fronting
we cannot have been fronting
you cannot have been fronting
they cannot have been fronting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I front?
can you front?
can she front?
can we front?
can you front?
can they front? 	can I be fronting?
can you be fronting?
can she be fronting?
can we be fronting?
can you be fronting?
can they be fronting? 	can I have fronted?
can you have fronted?
can she have fronted?
can we have fronted?
can you have fronted?
can they have fronted? 	can I have been fronting?
can you have been fronting?
can she have been fronting?
can we have been fronting?
can you have been fronting?
can they have been fronting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not front?
can you not front?
can she not front?
can we not front?
can you not front?
can they not front? 	can I not be fronting?
can you not be fronting?
can she not be fronting?
can we not be fronting?
can you not be fronting?
can they not be fronting? 	can I not have fronted?
can you not have fronted?
can she not have fronted?
can we not have fronted?
can you not have fronted?
can they not have fronted? 	can I not have been fronting?
can you not have been fronting?
can she not have been fronting?
can we not have been fronting?
can you not have been fronting?
can they not have been fronting?