English verb conjugation
MUST SWING

Irregular verb: swing - swung - swung

Affirmation

Simple form	V-ing form
I must swing you must swing he must swing we must swing you must swing they must swing	I must be swinging you must be swinging he must be swinging we must be swinging you must be swinging they must be swinging
Perfect	V-ing perfect
I must have swung you must have swung he must have swung we must have swung you must have swung they must have swung	I must have been swinging you must have been swinging he must have been swinging we must have been swinging you must have been swinging they must have been swinging

Negation

Simple form	V-ing form
I mustn't swing you mustn't swing he mustn't swing we mustn't swing you mustn't swing they mustn't swing	I mustn't be swinging you mustn't be swinging he mustn't be swinging we mustn't be swinging you mustn't be swinging they mustn't be swinging
Perfect	V-ing perfect
I mustn't have swung you mustn't have swung he mustn't have swung we mustn't have swung you mustn't have swung they mustn't have swung	I mustn't have been swinging you mustn't have been swinging he mustn't have been swinging we mustn't have been swinging you mustn't have been swinging they mustn't have been swinging

Interrogative form

Simple form	V-ing form
must I swing? must you swing? must he swing? must we swing? must you swing? must they swing?	must I be swinging? must you be swinging? must he be swinging? must we be swinging? must you be swinging? must they be swinging?
Perfect	V-ing perfect
must I have swung? must you have swung? must he have swung? must we have swung? must you have swung? must they have swung?	must I have been swinging? must you have been swinging? must he have been swinging? must we have been swinging? must you have been swinging? must they have been swinging?

Interro-negative form

Simple form	V-ing form
mustn't I swing? mustn't you swing? mustn't he swing? mustn't we swing? mustn't you swing? mustn't they swing?	mustn't I be swinging? mustn't you be swinging? mustn't he be swinging? mustn't we be swinging? mustn't you be swinging? mustn't they be swinging?
Perfect	V-ing perfect
mustn't I have swung? mustn't you have swung? mustn't he have swung? mustn't we have swung? mustn't you have swung? mustn't they have swung?	mustn't I have been swinging? mustn't you have been swinging? mustn't he have been swinging? mustn't we have been swinging? mustn't you have been swinging? mustn't they have been swinging?