English verb conjugation
COULD UNCHAIN

Regular verb: unchain - unchained - unchained

Affirmation

Simple form	V-ing form
I could unchain you could unchain he could unchain we could unchain you could unchain they could unchain	I could be unchaining you could be unchaining he could be unchaining we could be unchaining you could be unchaining they could be unchaining
Perfect	V-ing perfect
I could have unchained you could have unchained he could have unchained we could have unchained you could have unchained they could have unchained	I could have been unchaining you could have been unchaining he could have been unchaining we could have been unchaining you could have been unchaining they could have been unchaining

Negation

Simple form	V-ing form
I could not unchain you could not unchain he could not unchain we could not unchain you could not unchain they could not unchain	I could not be unchaining you could not be unchaining he could not be unchaining we could not be unchaining you could not be unchaining they could not be unchaining
Perfect	V-ing perfect
I could not have unchained you could not have unchained he could not have unchained we could not have unchained you could not have unchained they could not have unchained	I could not have been unchaining you could not have been unchaining he could not have been unchaining we could not have been unchaining you could not have been unchaining they could not have been unchaining

Interrogative form

Simple form	V-ing form
could I unchain? could you unchain? could he unchain? could we unchain? could you unchain? could they unchain?	could I be unchaining? could you be unchaining? could he be unchaining? could we be unchaining? could you be unchaining? could they be unchaining?
Perfect	V-ing perfect
could I have unchained? could you have unchained? could he have unchained? could we have unchained? could you have unchained? could they have unchained?	could I have been unchaining? could you have been unchaining? could he have been unchaining? could we have been unchaining? could you have been unchaining? could they have been unchaining?

Interro-negative form

Simple form	V-ing form
could I not unchain? could you not unchain? could he not unchain? could we not unchain? could you not unchain? could they not unchain?	could I not be unchaining? could you not be unchaining? could he not be unchaining? could we not be unchaining? could you not be unchaining? could they not be unchaining?
Perfect	V-ing perfect
could I not have unchained? could you not have unchained? could he not have unchained? could we not have unchained? could you not have unchained? could they not have unchained?	could I not have been unchaining? could you not have been unchaining? could he not have been unchaining? could we not have been unchaining? could you not have been unchaining? could they not have been unchaining?