could sober
Verbo regular: sober - sobered- sobered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could sober
you could sober
he could sober
we could sober
you could sober
they could sober 	I could be sobering
you could be sobering
he could be sobering
we could be sobering
you could be sobering
they could be sobering	I could have sobered
you could have sobered
he could have sobered
we could have sobered
you could have sobered
they could have sobered	I could have been sobering
you could have been sobering
he could have been sobering
we could have been sobering
you could have been sobering
they could have been sobering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not sober
you could not sober
he could not sober
we could not sober
you could not sober
they could not sober 	I could not be sobering
you could not be sobering
he could not be sobering
we could not be sobering
you could not be sobering
they could not be sobering	I could not have sobered
you could not have sobered
he could not have sobered
we could not have sobered
you could not have sobered
they could not have sobered	I could not have been sobering
you could not have been sobering
he could not have been sobering
we could not have been sobering
you could not have been sobering
they could not have been sobering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I sober?
could you sober?
could he sober?
could we sober?
could you sober?
could they sober? 	could I be sobering?
could you be sobering?
could he be sobering?
could we be sobering?
could you be sobering?
could they be sobering? 	could I have sobered?
could you have sobered?
could he have sobered?
could we have sobered?
could you have sobered?
could they have sobered? 	could I have been sobering?
could you have been sobering?
could he have been sobering?
could we have been sobering?
could you have been sobering?
could they have been sobering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not sober?
could you not sober?
could he not sober?
could we not sober?
could you not sober?
could they not sober? 	could I not be sobering?
could you not be sobering?
could he not be sobering?
could we not be sobering?
could you not be sobering?
could they not be sobering? 	could I not have sobered?
could you not have sobered?
could he not have sobered?
could we not have sobered?
could you not have sobered?
could they not have sobered? 	could I not have been sobering?
could you not have been sobering?
could he not have been sobering?
could we not have been sobering?
could you not have been sobering?
could they not have been sobering?