English verb conjugation
MUST UNCHAIN

Regular verb: unchain - unchained - unchained

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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