English verb conjugation
COULD UNHARNESS

Regular verb: unharness - unharnessed - unharnessed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?