could unstitch
Verbo regular: unstitch - unstitched- unstitched

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could unstitch
you could unstitch
he could unstitch
we could unstitch
you could unstitch
they could unstitch 	I could be unstitching
you could be unstitching
he could be unstitching
we could be unstitching
you could be unstitching
they could be unstitching	I could have unstitched
you could have unstitched
he could have unstitched
we could have unstitched
you could have unstitched
they could have unstitched	I could have been unstitching
you could have been unstitching
he could have been unstitching
we could have been unstitching
you could have been unstitching
they could have been unstitching	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not unstitch
you could not unstitch
he could not unstitch
we could not unstitch
you could not unstitch
they could not unstitch 	I could not be unstitching
you could not be unstitching
he could not be unstitching
we could not be unstitching
you could not be unstitching
they could not be unstitching	I could not have unstitched
you could not have unstitched
he could not have unstitched
we could not have unstitched
you could not have unstitched
they could not have unstitched	I could not have been unstitching
you could not have been unstitching
he could not have been unstitching
we could not have been unstitching
you could not have been unstitching
they could not have been unstitching	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I unstitch?
could you unstitch?
could he unstitch?
could we unstitch?
could you unstitch?
could they unstitch? 	could I be unstitching?
could you be unstitching?
could he be unstitching?
could we be unstitching?
could you be unstitching?
could they be unstitching? 	could I have unstitched?
could you have unstitched?
could he have unstitched?
could we have unstitched?
could you have unstitched?
could they have unstitched? 	could I have been unstitching?
could you have been unstitching?
could he have been unstitching?
could we have been unstitching?
could you have been unstitching?
could they have been unstitching? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not unstitch?
could you not unstitch?
could he not unstitch?
could we not unstitch?
could you not unstitch?
could they not unstitch? 	could I not be unstitching?
could you not be unstitching?
could he not be unstitching?
could we not be unstitching?
could you not be unstitching?
could they not be unstitching? 	could I not have unstitched?
could you not have unstitched?
could he not have unstitched?
could we not have unstitched?
could you not have unstitched?
could they not have unstitched? 	could I not have been unstitching?
could you not have been unstitching?
could he not have been unstitching?
could we not have been unstitching?
could you not have been unstitching?
could they not have been unstitching?