could vacuum
Verbo regular: vacuum - vacuumed- vacuumed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could vacuum
you could vacuum
he could vacuum
we could vacuum
you could vacuum
they could vacuum 	I could be vacuuming
you could be vacuuming
he could be vacuuming
we could be vacuuming
you could be vacuuming
they could be vacuuming	I could have vacuumed
you could have vacuumed
he could have vacuumed
we could have vacuumed
you could have vacuumed
they could have vacuumed	I could have been vacuuming
you could have been vacuuming
he could have been vacuuming
we could have been vacuuming
you could have been vacuuming
they could have been vacuuming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not vacuum
you could not vacuum
he could not vacuum
we could not vacuum
you could not vacuum
they could not vacuum 	I could not be vacuuming
you could not be vacuuming
he could not be vacuuming
we could not be vacuuming
you could not be vacuuming
they could not be vacuuming	I could not have vacuumed
you could not have vacuumed
he could not have vacuumed
we could not have vacuumed
you could not have vacuumed
they could not have vacuumed	I could not have been vacuuming
you could not have been vacuuming
he could not have been vacuuming
we could not have been vacuuming
you could not have been vacuuming
they could not have been vacuuming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I vacuum?
could you vacuum?
could he vacuum?
could we vacuum?
could you vacuum?
could they vacuum? 	could I be vacuuming?
could you be vacuuming?
could he be vacuuming?
could we be vacuuming?
could you be vacuuming?
could they be vacuuming? 	could I have vacuumed?
could you have vacuumed?
could he have vacuumed?
could we have vacuumed?
could you have vacuumed?
could they have vacuumed? 	could I have been vacuuming?
could you have been vacuuming?
could he have been vacuuming?
could we have been vacuuming?
could you have been vacuuming?
could they have been vacuuming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not vacuum?
could you not vacuum?
could he not vacuum?
could we not vacuum?
could you not vacuum?
could they not vacuum? 	could I not be vacuuming?
could you not be vacuuming?
could he not be vacuuming?
could we not be vacuuming?
could you not be vacuuming?
could they not be vacuuming? 	could I not have vacuumed?
could you not have vacuumed?
could he not have vacuumed?
could we not have vacuumed?
could you not have vacuumed?
could they not have vacuumed? 	could I not have been vacuuming?
could you not have been vacuuming?
could he not have been vacuuming?
could we not have been vacuuming?
could you not have been vacuuming?
could they not have been vacuuming?