English verb conjugation
MUST UPSWING

Irregular verb: upswing - upswung - upswung

Affirmation

Simple form	V-ing form
I must upswing you must upswing he must upswing we must upswing you must upswing they must upswing	I must be upswinging you must be upswinging he must be upswinging we must be upswinging you must be upswinging they must be upswinging
Perfect	V-ing perfect
I must have upswung you must have upswung he must have upswung we must have upswung you must have upswung they must have upswung	I must have been upswinging you must have been upswinging he must have been upswinging we must have been upswinging you must have been upswinging they must have been upswinging

Negation

Simple form	V-ing form
I mustn't upswing you mustn't upswing he mustn't upswing we mustn't upswing you mustn't upswing they mustn't upswing	I mustn't be upswinging you mustn't be upswinging he mustn't be upswinging we mustn't be upswinging you mustn't be upswinging they mustn't be upswinging
Perfect	V-ing perfect
I mustn't have upswung you mustn't have upswung he mustn't have upswung we mustn't have upswung you mustn't have upswung they mustn't have upswung	I mustn't have been upswinging you mustn't have been upswinging he mustn't have been upswinging we mustn't have been upswinging you mustn't have been upswinging they mustn't have been upswinging

Interrogative form

Simple form	V-ing form
must I upswing? must you upswing? must he upswing? must we upswing? must you upswing? must they upswing?	must I be upswinging? must you be upswinging? must he be upswinging? must we be upswinging? must you be upswinging? must they be upswinging?
Perfect	V-ing perfect
must I have upswung? must you have upswung? must he have upswung? must we have upswung? must you have upswung? must they have upswung?	must I have been upswinging? must you have been upswinging? must he have been upswinging? must we have been upswinging? must you have been upswinging? must they have been upswinging?

Interro-negative form

Simple form	V-ing form
mustn't I upswing? mustn't you upswing? mustn't he upswing? mustn't we upswing? mustn't you upswing? mustn't they upswing?	mustn't I be upswinging? mustn't you be upswinging? mustn't he be upswinging? mustn't we be upswinging? mustn't you be upswinging? mustn't they be upswinging?
Perfect	V-ing perfect
mustn't I have upswung? mustn't you have upswung? mustn't he have upswung? mustn't we have upswung? mustn't you have upswung? mustn't they have upswung?	mustn't I have been upswinging? mustn't you have been upswinging? mustn't he have been upswinging? mustn't we have been upswinging? mustn't you have been upswinging? mustn't they have been upswinging?