could impinge
Verbo regular: impinge - impinged- impinged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could impinge
you could impinge
he could impinge
we could impinge
you could impinge
they could impinge 	I could be impinging
you could be impinging
he could be impinging
we could be impinging
you could be impinging
they could be impinging	I could have impinged
you could have impinged
he could have impinged
we could have impinged
you could have impinged
they could have impinged	I could have been impinging
you could have been impinging
he could have been impinging
we could have been impinging
you could have been impinging
they could have been impinging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't impinge
you couldn't impinge
he couldn't impinge
we couldn't impinge
you couldn't impinge
they couldn't impinge 	I couldn't be impinging
you couldn't be impinging
he couldn't be impinging
we couldn't be impinging
you couldn't be impinging
they couldn't be impinging	I couldn't have impinged
you couldn't have impinged
he couldn't have impinged
we couldn't have impinged
you couldn't have impinged
they couldn't have impinged	I couldn't have been impinging
you couldn't have been impinging
he couldn't have been impinging
we couldn't have been impinging
you couldn't have been impinging
they couldn't have been impinging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I impinge?
could you impinge?
could he impinge?
could we impinge?
could you impinge?
could they impinge? 	could I be impinging?
could you be impinging?
could he be impinging?
could we be impinging?
could you be impinging?
could they be impinging? 	could I have impinged?
could you have impinged?
could he have impinged?
could we have impinged?
could you have impinged?
could they have impinged? 	could I have been impinging?
could you have been impinging?
could he have been impinging?
could we have been impinging?
could you have been impinging?
could they have been impinging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I impinge?
couldn't you impinge?
couldn't he impinge?
couldn't we impinge?
couldn't you impinge?
couldn't they impinge? 	couldn't I be impinging?
couldn't you be impinging?
couldn't he be impinging?
couldn't we be impinging?
couldn't you be impinging?
couldn't they be impinging? 	couldn't I have impinged?
couldn't you have impinged?
couldn't he have impinged?
couldn't we have impinged?
couldn't you have impinged?
couldn't they have impinged? 	couldn't I have been impinging?
couldn't you have been impinging?
couldn't he have been impinging?
couldn't we have been impinging?
couldn't you have been impinging?
couldn't they have been impinging?