could unharness
Verbo regular: unharness - unharnessed- unharnessed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could unharness
you could unharness
he could unharness
we could unharness
you could unharness
they could unharness 	I could be unharnessing
you could be unharnessing
he could be unharnessing
we could be unharnessing
you could be unharnessing
they could be unharnessing	I could have unharnessed
you could have unharnessed
he could have unharnessed
we could have unharnessed
you could have unharnessed
they could have unharnessed	I could have been unharnessing
you could have been unharnessing
he could have been unharnessing
we could have been unharnessing
you could have been unharnessing
they could have been unharnessing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not unharness
you could not unharness
he could not unharness
we could not unharness
you could not unharness
they could not unharness 	I could not be unharnessing
you could not be unharnessing
he could not be unharnessing
we could not be unharnessing
you could not be unharnessing
they could not be unharnessing	I could not have unharnessed
you could not have unharnessed
he could not have unharnessed
we could not have unharnessed
you could not have unharnessed
they could not have unharnessed	I could not have been unharnessing
you could not have been unharnessing
he could not have been unharnessing
we could not have been unharnessing
you could not have been unharnessing
they could not have been unharnessing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I unharness?
could you unharness?
could he unharness?
could we unharness?
could you unharness?
could they unharness? 	could I be unharnessing?
could you be unharnessing?
could he be unharnessing?
could we be unharnessing?
could you be unharnessing?
could they be unharnessing? 	could I have unharnessed?
could you have unharnessed?
could he have unharnessed?
could we have unharnessed?
could you have unharnessed?
could they have unharnessed? 	could I have been unharnessing?
could you have been unharnessing?
could he have been unharnessing?
could we have been unharnessing?
could you have been unharnessing?
could they have been unharnessing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not unharness?
could you not unharness?
could he not unharness?
could we not unharness?
could you not unharness?
could they not unharness? 	could I not be unharnessing?
could you not be unharnessing?
could he not be unharnessing?
could we not be unharnessing?
could you not be unharnessing?
could they not be unharnessing? 	could I not have unharnessed?
could you not have unharnessed?
could he not have unharnessed?
could we not have unharnessed?
could you not have unharnessed?
could they not have unharnessed? 	could I not have been unharnessing?
could you not have been unharnessing?
could he not have been unharnessing?
could we not have been unharnessing?
could you not have been unharnessing?
could they not have been unharnessing?