could bud
Verbo regular: bud - budded- budded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could bud
you could bud
he could bud
we could bud
you could bud
they could bud 	I could be budding
you could be budding
he could be budding
we could be budding
you could be budding
they could be budding	I could have budded
you could have budded
he could have budded
we could have budded
you could have budded
they could have budded	I could have been budding
you could have been budding
he could have been budding
we could have been budding
you could have been budding
they could have been budding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not bud
you could not bud
he could not bud
we could not bud
you could not bud
they could not bud 	I could not be budding
you could not be budding
he could not be budding
we could not be budding
you could not be budding
they could not be budding	I could not have budded
you could not have budded
he could not have budded
we could not have budded
you could not have budded
they could not have budded	I could not have been budding
you could not have been budding
he could not have been budding
we could not have been budding
you could not have been budding
they could not have been budding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I bud?
could you bud?
could he bud?
could we bud?
could you bud?
could they bud? 	could I be budding?
could you be budding?
could he be budding?
could we be budding?
could you be budding?
could they be budding? 	could I have budded?
could you have budded?
could he have budded?
could we have budded?
could you have budded?
could they have budded? 	could I have been budding?
could you have been budding?
could he have been budding?
could we have been budding?
could you have been budding?
could they have been budding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not bud?
could you not bud?
could he not bud?
could we not bud?
could you not bud?
could they not bud? 	could I not be budding?
could you not be budding?
could he not be budding?
could we not be budding?
could you not be budding?
could they not be budding? 	could I not have budded?
could you not have budded?
could he not have budded?
could we not have budded?
could you not have budded?
could they not have budded? 	could I not have been budding?
could you not have been budding?
could he not have been budding?
could we not have been budding?
could you not have been budding?
could they not have been budding?