could restring
Verbo regular: restring - restringed- restringed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could restring
you could restring
he could restring
we could restring
you could restring
they could restring 	I could be restringing
you could be restringing
he could be restringing
we could be restringing
you could be restringing
they could be restringing	I could have restringed
you could have restringed
he could have restringed
we could have restringed
you could have restringed
they could have restringed	I could have been restringing
you could have been restringing
he could have been restringing
we could have been restringing
you could have been restringing
they could have been restringing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not restring
you could not restring
he could not restring
we could not restring
you could not restring
they could not restring 	I could not be restringing
you could not be restringing
he could not be restringing
we could not be restringing
you could not be restringing
they could not be restringing	I could not have restringed
you could not have restringed
he could not have restringed
we could not have restringed
you could not have restringed
they could not have restringed	I could not have been restringing
you could not have been restringing
he could not have been restringing
we could not have been restringing
you could not have been restringing
they could not have been restringing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I restring?
could you restring?
could he restring?
could we restring?
could you restring?
could they restring? 	could I be restringing?
could you be restringing?
could he be restringing?
could we be restringing?
could you be restringing?
could they be restringing? 	could I have restringed?
could you have restringed?
could he have restringed?
could we have restringed?
could you have restringed?
could they have restringed? 	could I have been restringing?
could you have been restringing?
could he have been restringing?
could we have been restringing?
could you have been restringing?
could they have been restringing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not restring?
could you not restring?
could he not restring?
could we not restring?
could you not restring?
could they not restring? 	could I not be restringing?
could you not be restringing?
could he not be restringing?
could we not be restringing?
could you not be restringing?
could they not be restringing? 	could I not have restringed?
could you not have restringed?
could he not have restringed?
could we not have restringed?
could you not have restringed?
could they not have restringed? 	could I not have been restringing?
could you not have been restringing?
could he not have been restringing?
could we not have been restringing?
could you not have been restringing?
could they not have been restringing?