could yodel
Verbo regular: yodel - yodelled- yodelled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could yodel
you could yodel
he could yodel
we could yodel
you could yodel
they could yodel 	I could be yodelling
you could be yodelling
he could be yodelling
we could be yodelling
you could be yodelling
they could be yodelling	I could have yodelled
you could have yodelled
he could have yodelled
we could have yodelled
you could have yodelled
they could have yodelled	I could have been yodelling
you could have been yodelling
he could have been yodelling
we could have been yodelling
you could have been yodelling
they could have been yodelling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not yodel
you could not yodel
he could not yodel
we could not yodel
you could not yodel
they could not yodel 	I could not be yodelling
you could not be yodelling
he could not be yodelling
we could not be yodelling
you could not be yodelling
they could not be yodelling	I could not have yodelled
you could not have yodelled
he could not have yodelled
we could not have yodelled
you could not have yodelled
they could not have yodelled	I could not have been yodelling
you could not have been yodelling
he could not have been yodelling
we could not have been yodelling
you could not have been yodelling
they could not have been yodelling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I yodel?
could you yodel?
could he yodel?
could we yodel?
could you yodel?
could they yodel? 	could I be yodelling?
could you be yodelling?
could he be yodelling?
could we be yodelling?
could you be yodelling?
could they be yodelling? 	could I have yodelled?
could you have yodelled?
could he have yodelled?
could we have yodelled?
could you have yodelled?
could they have yodelled? 	could I have been yodelling?
could you have been yodelling?
could he have been yodelling?
could we have been yodelling?
could you have been yodelling?
could they have been yodelling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not yodel?
could you not yodel?
could he not yodel?
could we not yodel?
could you not yodel?
could they not yodel? 	could I not be yodelling?
could you not be yodelling?
could he not be yodelling?
could we not be yodelling?
could you not be yodelling?
could they not be yodelling? 	could I not have yodelled?
could you not have yodelled?
could he not have yodelled?
could we not have yodelled?
could you not have yodelled?
could they not have yodelled? 	could I not have been yodelling?
could you not have been yodelling?
could he not have been yodelling?
could we not have been yodelling?
could you not have been yodelling?
could they not have been yodelling?