could untwine
Verbo regular: untwine - untwined- untwined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could untwine
you could untwine
he could untwine
we could untwine
you could untwine
they could untwine 	I could be untwining
you could be untwining
he could be untwining
we could be untwining
you could be untwining
they could be untwining	I could have untwined
you could have untwined
he could have untwined
we could have untwined
you could have untwined
they could have untwined	I could have been untwining
you could have been untwining
he could have been untwining
we could have been untwining
you could have been untwining
they could have been untwining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not untwine
you could not untwine
he could not untwine
we could not untwine
you could not untwine
they could not untwine 	I could not be untwining
you could not be untwining
he could not be untwining
we could not be untwining
you could not be untwining
they could not be untwining	I could not have untwined
you could not have untwined
he could not have untwined
we could not have untwined
you could not have untwined
they could not have untwined	I could not have been untwining
you could not have been untwining
he could not have been untwining
we could not have been untwining
you could not have been untwining
they could not have been untwining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I untwine?
could you untwine?
could he untwine?
could we untwine?
could you untwine?
could they untwine? 	could I be untwining?
could you be untwining?
could he be untwining?
could we be untwining?
could you be untwining?
could they be untwining? 	could I have untwined?
could you have untwined?
could he have untwined?
could we have untwined?
could you have untwined?
could they have untwined? 	could I have been untwining?
could you have been untwining?
could he have been untwining?
could we have been untwining?
could you have been untwining?
could they have been untwining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not untwine?
could you not untwine?
could he not untwine?
could we not untwine?
could you not untwine?
could they not untwine? 	could I not be untwining?
could you not be untwining?
could he not be untwining?
could we not be untwining?
could you not be untwining?
could they not be untwining? 	could I not have untwined?
could you not have untwined?
could he not have untwined?
could we not have untwined?
could you not have untwined?
could they not have untwined? 	could I not have been untwining?
could you not have been untwining?
could he not have been untwining?
could we not have been untwining?
could you not have been untwining?
could they not have been untwining?