could knot
Verbo regular: knot - knotted- knotted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could knot
you could knot
he could knot
we could knot
you could knot
they could knot 	I could be knotting
you could be knotting
he could be knotting
we could be knotting
you could be knotting
they could be knotting	I could have knotted
you could have knotted
he could have knotted
we could have knotted
you could have knotted
they could have knotted	I could have been knotting
you could have been knotting
he could have been knotting
we could have been knotting
you could have been knotting
they could have been knotting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not knot
you could not knot
he could not knot
we could not knot
you could not knot
they could not knot 	I could not be knotting
you could not be knotting
he could not be knotting
we could not be knotting
you could not be knotting
they could not be knotting	I could not have knotted
you could not have knotted
he could not have knotted
we could not have knotted
you could not have knotted
they could not have knotted	I could not have been knotting
you could not have been knotting
he could not have been knotting
we could not have been knotting
you could not have been knotting
they could not have been knotting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I knot?
could you knot?
could he knot?
could we knot?
could you knot?
could they knot? 	could I be knotting?
could you be knotting?
could he be knotting?
could we be knotting?
could you be knotting?
could they be knotting? 	could I have knotted?
could you have knotted?
could he have knotted?
could we have knotted?
could you have knotted?
could they have knotted? 	could I have been knotting?
could you have been knotting?
could he have been knotting?
could we have been knotting?
could you have been knotting?
could they have been knotting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not knot?
could you not knot?
could he not knot?
could we not knot?
could you not knot?
could they not knot? 	could I not be knotting?
could you not be knotting?
could he not be knotting?
could we not be knotting?
could you not be knotting?
could they not be knotting? 	could I not have knotted?
could you not have knotted?
could he not have knotted?
could we not have knotted?
could you not have knotted?
could they not have knotted? 	could I not have been knotting?
could you not have been knotting?
could he not have been knotting?
could we not have been knotting?
could you not have been knotting?
could they not have been knotting?