could burble
Verbo regular: burble - burbled- burbled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could burble
you could burble
he could burble
we could burble
you could burble
they could burble 	I could be burbling
you could be burbling
he could be burbling
we could be burbling
you could be burbling
they could be burbling	I could have burbled
you could have burbled
he could have burbled
we could have burbled
you could have burbled
they could have burbled	I could have been burbling
you could have been burbling
he could have been burbling
we could have been burbling
you could have been burbling
they could have been burbling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not burble
you could not burble
he could not burble
we could not burble
you could not burble
they could not burble 	I could not be burbling
you could not be burbling
he could not be burbling
we could not be burbling
you could not be burbling
they could not be burbling	I could not have burbled
you could not have burbled
he could not have burbled
we could not have burbled
you could not have burbled
they could not have burbled	I could not have been burbling
you could not have been burbling
he could not have been burbling
we could not have been burbling
you could not have been burbling
they could not have been burbling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I burble?
could you burble?
could he burble?
could we burble?
could you burble?
could they burble? 	could I be burbling?
could you be burbling?
could he be burbling?
could we be burbling?
could you be burbling?
could they be burbling? 	could I have burbled?
could you have burbled?
could he have burbled?
could we have burbled?
could you have burbled?
could they have burbled? 	could I have been burbling?
could you have been burbling?
could he have been burbling?
could we have been burbling?
could you have been burbling?
could they have been burbling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not burble?
could you not burble?
could he not burble?
could we not burble?
could you not burble?
could they not burble? 	could I not be burbling?
could you not be burbling?
could he not be burbling?
could we not be burbling?
could you not be burbling?
could they not be burbling? 	could I not have burbled?
could you not have burbled?
could he not have burbled?
could we not have burbled?
could you not have burbled?
could they not have burbled? 	could I not have been burbling?
could you not have been burbling?
could he not have been burbling?
could we not have been burbling?
could you not have been burbling?
could they not have been burbling?