could upswing
Verbo irregular: upswing - upswung- upswung

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could upswing
you could upswing
she could upswing
we could upswing
you could upswing
they could upswing 	I could be upswinging
you could be upswinging
she could be upswinging
we could be upswinging
you could be upswinging
they could be upswinging	I could have upswung
you could have upswung
she could have upswung
we could have upswung
you could have upswung
they could have upswung	I could have been upswinging
you could have been upswinging
she could have been upswinging
we could have been upswinging
you could have been upswinging
they could have been upswinging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't upswing
you couldn't upswing
she couldn't upswing
we couldn't upswing
you couldn't upswing
they couldn't upswing 	I couldn't be upswinging
you couldn't be upswinging
she couldn't be upswinging
we couldn't be upswinging
you couldn't be upswinging
they couldn't be upswinging	I couldn't have upswung
you couldn't have upswung
she couldn't have upswung
we couldn't have upswung
you couldn't have upswung
they couldn't have upswung	I couldn't have been upswinging
you couldn't have been upswinging
she couldn't have been upswinging
we couldn't have been upswinging
you couldn't have been upswinging
they couldn't have been upswinging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I upswing?
could you upswing?
could she upswing?
could we upswing?
could you upswing?
could they upswing? 	could I be upswinging?
could you be upswinging?
could she be upswinging?
could we be upswinging?
could you be upswinging?
could they be upswinging? 	could I have upswung?
could you have upswung?
could she have upswung?
could we have upswung?
could you have upswung?
could they have upswung? 	could I have been upswinging?
could you have been upswinging?
could she have been upswinging?
could we have been upswinging?
could you have been upswinging?
could they have been upswinging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I upswing?
couldn't you upswing?
couldn't she upswing?
couldn't we upswing?
couldn't you upswing?
couldn't they upswing? 	couldn't I be upswinging?
couldn't you be upswinging?
couldn't she be upswinging?
couldn't we be upswinging?
couldn't you be upswinging?
couldn't they be upswinging? 	couldn't I have upswung?
couldn't you have upswung?
couldn't she have upswung?
couldn't we have upswung?
couldn't you have upswung?
couldn't they have upswung? 	couldn't I have been upswinging?
couldn't you have been upswinging?
couldn't she have been upswinging?
couldn't we have been upswinging?
couldn't you have been upswinging?
couldn't they have been upswinging?