could retread
Verbo regular: retread - retreaded- retreaded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could retread
you could retread
he could retread
we could retread
you could retread
they could retread 	I could be retreading
you could be retreading
he could be retreading
we could be retreading
you could be retreading
they could be retreading	I could have retreaded
you could have retreaded
he could have retreaded
we could have retreaded
you could have retreaded
they could have retreaded	I could have been retreading
you could have been retreading
he could have been retreading
we could have been retreading
you could have been retreading
they could have been retreading	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not retread
you could not retread
he could not retread
we could not retread
you could not retread
they could not retread 	I could not be retreading
you could not be retreading
he could not be retreading
we could not be retreading
you could not be retreading
they could not be retreading	I could not have retreaded
you could not have retreaded
he could not have retreaded
we could not have retreaded
you could not have retreaded
they could not have retreaded	I could not have been retreading
you could not have been retreading
he could not have been retreading
we could not have been retreading
you could not have been retreading
they could not have been retreading	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I retread?
could you retread?
could he retread?
could we retread?
could you retread?
could they retread? 	could I be retreading?
could you be retreading?
could he be retreading?
could we be retreading?
could you be retreading?
could they be retreading? 	could I have retreaded?
could you have retreaded?
could he have retreaded?
could we have retreaded?
could you have retreaded?
could they have retreaded? 	could I have been retreading?
could you have been retreading?
could he have been retreading?
could we have been retreading?
could you have been retreading?
could they have been retreading? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not retread?
could you not retread?
could he not retread?
could we not retread?
could you not retread?
could they not retread? 	could I not be retreading?
could you not be retreading?
could he not be retreading?
could we not be retreading?
could you not be retreading?
could they not be retreading? 	could I not have retreaded?
could you not have retreaded?
could he not have retreaded?
could we not have retreaded?
could you not have retreaded?
could they not have retreaded? 	could I not have been retreading?
could you not have been retreading?
could he not have been retreading?
could we not have been retreading?
could you not have been retreading?
could they not have been retreading?