must swing
Verbo irregular: swing - swung- swung

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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?