English verb conjugation
MUST UNCHAIN

Regular verb: unchain - unchained - unchained

Affirmation

Simple form	V-ing form
I must unchain you must unchain she must unchain we must unchain you must unchain they must unchain	I must be unchaining you must be unchaining she 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 she 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 she 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 she 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 she 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 she 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 she 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 she unchain? must we unchain? must you unchain? must they unchain?	must I be unchaining? must you be unchaining? must she 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 she 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 she 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 she 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 she 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 she 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 she have been unchaining? mustn't we have been unchaining? mustn't you have been unchaining? mustn't they have been unchaining?