could mat
Verbo regular: mat - matted- matted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could mat
you could mat
he could mat
we could mat
you could mat
they could mat 	I could be matting
you could be matting
he could be matting
we could be matting
you could be matting
they could be matting	I could have matted
you could have matted
he could have matted
we could have matted
you could have matted
they could have matted	I could have been matting
you could have been matting
he could have been matting
we could have been matting
you could have been matting
they could have been matting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not mat
you could not mat
he could not mat
we could not mat
you could not mat
they could not mat 	I could not be matting
you could not be matting
he could not be matting
we could not be matting
you could not be matting
they could not be matting	I could not have matted
you could not have matted
he could not have matted
we could not have matted
you could not have matted
they could not have matted	I could not have been matting
you could not have been matting
he could not have been matting
we could not have been matting
you could not have been matting
they could not have been matting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I mat?
could you mat?
could he mat?
could we mat?
could you mat?
could they mat? 	could I be matting?
could you be matting?
could he be matting?
could we be matting?
could you be matting?
could they be matting? 	could I have matted?
could you have matted?
could he have matted?
could we have matted?
could you have matted?
could they have matted? 	could I have been matting?
could you have been matting?
could he have been matting?
could we have been matting?
could you have been matting?
could they have been matting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not mat?
could you not mat?
could he not mat?
could we not mat?
could you not mat?
could they not mat? 	could I not be matting?
could you not be matting?
could he not be matting?
could we not be matting?
could you not be matting?
could they not be matting? 	could I not have matted?
could you not have matted?
could he not have matted?
could we not have matted?
could you not have matted?
could they not have matted? 	could I not have been matting?
could you not have been matting?
could he not have been matting?
could we not have been matting?
could you not have been matting?
could they not have been matting?