could riffle
Verbo regular: riffle - riffled- riffled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could riffle
you could riffle
he could riffle
we could riffle
you could riffle
they could riffle 	I could be riffling
you could be riffling
he could be riffling
we could be riffling
you could be riffling
they could be riffling	I could have riffled
you could have riffled
he could have riffled
we could have riffled
you could have riffled
they could have riffled	I could have been riffling
you could have been riffling
he could have been riffling
we could have been riffling
you could have been riffling
they could have been riffling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not riffle
you could not riffle
he could not riffle
we could not riffle
you could not riffle
they could not riffle 	I could not be riffling
you could not be riffling
he could not be riffling
we could not be riffling
you could not be riffling
they could not be riffling	I could not have riffled
you could not have riffled
he could not have riffled
we could not have riffled
you could not have riffled
they could not have riffled	I could not have been riffling
you could not have been riffling
he could not have been riffling
we could not have been riffling
you could not have been riffling
they could not have been riffling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I riffle?
could you riffle?
could he riffle?
could we riffle?
could you riffle?
could they riffle? 	could I be riffling?
could you be riffling?
could he be riffling?
could we be riffling?
could you be riffling?
could they be riffling? 	could I have riffled?
could you have riffled?
could he have riffled?
could we have riffled?
could you have riffled?
could they have riffled? 	could I have been riffling?
could you have been riffling?
could he have been riffling?
could we have been riffling?
could you have been riffling?
could they have been riffling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not riffle?
could you not riffle?
could he not riffle?
could we not riffle?
could you not riffle?
could they not riffle? 	could I not be riffling?
could you not be riffling?
could he not be riffling?
could we not be riffling?
could you not be riffling?
could they not be riffling? 	could I not have riffled?
could you not have riffled?
could he not have riffled?
could we not have riffled?
could you not have riffled?
could they not have riffled? 	could I not have been riffling?
could you not have been riffling?
could he not have been riffling?
could we not have been riffling?
could you not have been riffling?
could they not have been riffling?