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 mustn't unchain you mustn't unchain he mustn't unchain we mustn't unchain you mustn't unchain they mustn't unchain	I mustn't be unchaining you mustn't be unchaining he mustn't be unchaining we mustn't be unchaining you mustn't be unchaining they mustn't be unchaining
Perfect	V-ing perfect
I mustn't have unchained you mustn't have unchained he mustn't have unchained we mustn't have unchained you mustn't have unchained they mustn't have unchained	I mustn't have been unchaining you mustn't have been unchaining he mustn't have been unchaining we mustn't have been unchaining you mustn't have been unchaining they mustn't 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
mustn't I unchain? mustn't you unchain? mustn't he unchain? mustn't we unchain? mustn't you unchain? mustn't they unchain?	mustn't I be unchaining? mustn't you be unchaining? mustn't he be unchaining? mustn't we be unchaining? mustn't you be unchaining? mustn't they be unchaining?
Perfect	V-ing perfect
mustn't I have unchained? mustn't you have unchained? mustn't he have unchained? mustn't we have unchained? mustn't you have unchained? mustn't they have unchained?	mustn't I have been unchaining? mustn't you have been unchaining? mustn't he have been unchaining? mustn't we have been unchaining? mustn't you have been unchaining? mustn't they have been unchaining?