could spring
Verbo irregular: spring - sprang, sprung- sprung

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could spring
you could spring
he could spring
we could spring
you could spring
they could spring 	I could be springing
you could be springing
he could be springing
we could be springing
you could be springing
they could be springing	I could have sprung
you could have sprung
he could have sprung
we could have sprung
you could have sprung
they could have sprung	I could have been springing
you could have been springing
he could have been springing
we could have been springing
you could have been springing
they could have been springing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not spring
you could not spring
he could not spring
we could not spring
you could not spring
they could not spring 	I could not be springing
you could not be springing
he could not be springing
we could not be springing
you could not be springing
they could not be springing	I could not have sprung
you could not have sprung
he could not have sprung
we could not have sprung
you could not have sprung
they could not have sprung	I could not have been springing
you could not have been springing
he could not have been springing
we could not have been springing
you could not have been springing
they could not have been springing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I spring?
could you spring?
could he spring?
could we spring?
could you spring?
could they spring? 	could I be springing?
could you be springing?
could he be springing?
could we be springing?
could you be springing?
could they be springing? 	could I have sprung?
could you have sprung?
could he have sprung?
could we have sprung?
could you have sprung?
could they have sprung? 	could I have been springing?
could you have been springing?
could he have been springing?
could we have been springing?
could you have been springing?
could they have been springing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not spring?
could you not spring?
could he not spring?
could we not spring?
could you not spring?
could they not spring? 	could I not be springing?
could you not be springing?
could he not be springing?
could we not be springing?
could you not be springing?
could they not be springing? 	could I not have sprung?
could you not have sprung?
could he not have sprung?
could we not have sprung?
could you not have sprung?
could they not have sprung? 	could I not have been springing?
could you not have been springing?
could he not have been springing?
could we not have been springing?
could you not have been springing?
could they not have been springing?