could boom
Verbo regular: boom - boomed- boomed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could boom
you could boom
he could boom
we could boom
you could boom
they could boom 	I could be booming
you could be booming
he could be booming
we could be booming
you could be booming
they could be booming	I could have boomed
you could have boomed
he could have boomed
we could have boomed
you could have boomed
they could have boomed	I could have been booming
you could have been booming
he could have been booming
we could have been booming
you could have been booming
they could have been booming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not boom
you could not boom
he could not boom
we could not boom
you could not boom
they could not boom 	I could not be booming
you could not be booming
he could not be booming
we could not be booming
you could not be booming
they could not be booming	I could not have boomed
you could not have boomed
he could not have boomed
we could not have boomed
you could not have boomed
they could not have boomed	I could not have been booming
you could not have been booming
he could not have been booming
we could not have been booming
you could not have been booming
they could not have been booming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I boom?
could you boom?
could he boom?
could we boom?
could you boom?
could they boom? 	could I be booming?
could you be booming?
could he be booming?
could we be booming?
could you be booming?
could they be booming? 	could I have boomed?
could you have boomed?
could he have boomed?
could we have boomed?
could you have boomed?
could they have boomed? 	could I have been booming?
could you have been booming?
could he have been booming?
could we have been booming?
could you have been booming?
could they have been booming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not boom?
could you not boom?
could he not boom?
could we not boom?
could you not boom?
could they not boom? 	could I not be booming?
could you not be booming?
could he not be booming?
could we not be booming?
could you not be booming?
could they not be booming? 	could I not have boomed?
could you not have boomed?
could he not have boomed?
could we not have boomed?
could you not have boomed?
could they not have boomed? 	could I not have been booming?
could you not have been booming?
could he not have been booming?
could we not have been booming?
could you not have been booming?
could they not have been booming?