English verb conjugation
MUST CHAIN

Regular verb: chain - chained - chained

Affirmation

Simple form	V-ing form
I must chain you must chain he must chain we must chain you must chain they must chain	I must be chaining you must be chaining he must be chaining we must be chaining you must be chaining they must be chaining
Perfect	V-ing perfect
I must have chained you must have chained he must have chained we must have chained you must have chained they must have chained	I must have been chaining you must have been chaining he must have been chaining we must have been chaining you must have been chaining they must have been chaining

Negation

Simple form	V-ing form
I mustn't chain you mustn't chain he mustn't chain we mustn't chain you mustn't chain they mustn't chain	I mustn't be chaining you mustn't be chaining he mustn't be chaining we mustn't be chaining you mustn't be chaining they mustn't be chaining
Perfect	V-ing perfect
I mustn't have chained you mustn't have chained he mustn't have chained we mustn't have chained you mustn't have chained they mustn't have chained	I mustn't have been chaining you mustn't have been chaining he mustn't have been chaining we mustn't have been chaining you mustn't have been chaining they mustn't have been chaining

Interrogative form

Simple form	V-ing form
must I chain? must you chain? must he chain? must we chain? must you chain? must they chain?	must I be chaining? must you be chaining? must he be chaining? must we be chaining? must you be chaining? must they be chaining?
Perfect	V-ing perfect
must I have chained? must you have chained? must he have chained? must we have chained? must you have chained? must they have chained?	must I have been chaining? must you have been chaining? must he have been chaining? must we have been chaining? must you have been chaining? must they have been chaining?

Interro-negative form

Simple form	V-ing form
mustn't I chain? mustn't you chain? mustn't he chain? mustn't we chain? mustn't you chain? mustn't they chain?	mustn't I be chaining? mustn't you be chaining? mustn't he be chaining? mustn't we be chaining? mustn't you be chaining? mustn't they be chaining?
Perfect	V-ing perfect
mustn't I have chained? mustn't you have chained? mustn't he have chained? mustn't we have chained? mustn't you have chained? mustn't they have chained?	mustn't I have been chaining? mustn't you have been chaining? mustn't he have been chaining? mustn't we have been chaining? mustn't you have been chaining? mustn't they have been chaining?