could pitterpatter
Verbo regular: pitterpatter - pitterpattered- pitterpattered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could pitterpatter
you could pitterpatter
he could pitterpatter
we could pitterpatter
you could pitterpatter
they could pitterpatter 	I could be pitterpattering
you could be pitterpattering
he could be pitterpattering
we could be pitterpattering
you could be pitterpattering
they could be pitterpattering	I could have pitterpattered
you could have pitterpattered
he could have pitterpattered
we could have pitterpattered
you could have pitterpattered
they could have pitterpattered	I could have been pitterpattering
you could have been pitterpattering
he could have been pitterpattering
we could have been pitterpattering
you could have been pitterpattering
they could have been pitterpattering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not pitterpatter
you could not pitterpatter
he could not pitterpatter
we could not pitterpatter
you could not pitterpatter
they could not pitterpatter 	I could not be pitterpattering
you could not be pitterpattering
he could not be pitterpattering
we could not be pitterpattering
you could not be pitterpattering
they could not be pitterpattering	I could not have pitterpattered
you could not have pitterpattered
he could not have pitterpattered
we could not have pitterpattered
you could not have pitterpattered
they could not have pitterpattered	I could not have been pitterpattering
you could not have been pitterpattering
he could not have been pitterpattering
we could not have been pitterpattering
you could not have been pitterpattering
they could not have been pitterpattering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I pitterpatter?
could you pitterpatter?
could he pitterpatter?
could we pitterpatter?
could you pitterpatter?
could they pitterpatter? 	could I be pitterpattering?
could you be pitterpattering?
could he be pitterpattering?
could we be pitterpattering?
could you be pitterpattering?
could they be pitterpattering? 	could I have pitterpattered?
could you have pitterpattered?
could he have pitterpattered?
could we have pitterpattered?
could you have pitterpattered?
could they have pitterpattered? 	could I have been pitterpattering?
could you have been pitterpattering?
could he have been pitterpattering?
could we have been pitterpattering?
could you have been pitterpattering?
could they have been pitterpattering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not pitterpatter?
could you not pitterpatter?
could he not pitterpatter?
could we not pitterpatter?
could you not pitterpatter?
could they not pitterpatter? 	could I not be pitterpattering?
could you not be pitterpattering?
could he not be pitterpattering?
could we not be pitterpattering?
could you not be pitterpattering?
could they not be pitterpattering? 	could I not have pitterpattered?
could you not have pitterpattered?
could he not have pitterpattered?
could we not have pitterpattered?
could you not have pitterpattered?
could they not have pitterpattered? 	could I not have been pitterpattering?
could you not have been pitterpattering?
could he not have been pitterpattering?
could we not have been pitterpattering?
could you not have been pitterpattering?
could they not have been pitterpattering?