must upswing
Verbo irregular: upswing - upswung- upswung

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

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

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

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