can unstring
Verbo irregular: unstring - unstrung- unstrung

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can unstring
you can unstring
he can unstring
we can unstring
you can unstring
they can unstring 	I can be unstringing
you can be unstringing
he can be unstringing
we can be unstringing
you can be unstringing
they can be unstringing	I can have unstrung
you can have unstrung
he can have unstrung
we can have unstrung
you can have unstrung
they can have unstrung	I can have been unstringing
you can have been unstringing
he can have been unstringing
we can have been unstringing
you can have been unstringing
they can have been unstringing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot unstring
you cannot unstring
he cannot unstring
we cannot unstring
you cannot unstring
they cannot unstring 	I cannot be unstringing
you cannot be unstringing
he cannot be unstringing
we cannot be unstringing
you cannot be unstringing
they cannot be unstringing	I cannot have unstrung
you cannot have unstrung
he cannot have unstrung
we cannot have unstrung
you cannot have unstrung
they cannot have unstrung	I cannot have been unstringing
you cannot have been unstringing
he cannot have been unstringing
we cannot have been unstringing
you cannot have been unstringing
they cannot have been unstringing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I unstring?
can you unstring?
can he unstring?
can we unstring?
can you unstring?
can they unstring? 	can I be unstringing?
can you be unstringing?
can he be unstringing?
can we be unstringing?
can you be unstringing?
can they be unstringing? 	can I have unstrung?
can you have unstrung?
can he have unstrung?
can we have unstrung?
can you have unstrung?
can they have unstrung? 	can I have been unstringing?
can you have been unstringing?
can he have been unstringing?
can we have been unstringing?
can you have been unstringing?
can they have been unstringing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not unstring?
can you not unstring?
can he not unstring?
can we not unstring?
can you not unstring?
can they not unstring? 	can I not be unstringing?
can you not be unstringing?
can he not be unstringing?
can we not be unstringing?
can you not be unstringing?
can they not be unstringing? 	can I not have unstrung?
can you not have unstrung?
can he not have unstrung?
can we not have unstrung?
can you not have unstrung?
can they not have unstrung? 	can I not have been unstringing?
can you not have been unstringing?
can he not have been unstringing?
can we not have been unstringing?
can you not have been unstringing?
can they not have been unstringing?