could pitterpatter
Verbe régulier : pitterpatter - pitterpattered- pitterpattered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en 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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't pitterpatter
you couldn't pitterpatter
he couldn't pitterpatter
we couldn't pitterpatter
you couldn't pitterpatter
they couldn't pitterpatter 	I couldn't be pitterpattering
you couldn't be pitterpattering
he couldn't be pitterpattering
we couldn't be pitterpattering
you couldn't be pitterpattering
they couldn't be pitterpattering	I couldn't have pitterpattered
you couldn't have pitterpattered
he couldn't have pitterpattered
we couldn't have pitterpattered
you couldn't have pitterpattered
they couldn't have pitterpattered	I couldn't have been pitterpattering
you couldn't have been pitterpattering
he couldn't have been pitterpattering
we couldn't have been pitterpattering
you couldn't have been pitterpattering
they couldn't have been pitterpattering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en 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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I pitterpatter?
couldn't you pitterpatter?
couldn't he pitterpatter?
couldn't we pitterpatter?
couldn't you pitterpatter?
couldn't they pitterpatter? 	couldn't I be pitterpattering?
couldn't you be pitterpattering?
couldn't he be pitterpattering?
couldn't we be pitterpattering?
couldn't you be pitterpattering?
couldn't they be pitterpattering? 	couldn't I have pitterpattered?
couldn't you have pitterpattered?
couldn't he have pitterpattered?
couldn't we have pitterpattered?
couldn't you have pitterpattered?
couldn't they have pitterpattered? 	couldn't I have been pitterpattering?
couldn't you have been pitterpattering?
couldn't he have been pitterpattering?
couldn't we have been pitterpattering?
couldn't you have been pitterpattering?
couldn't they have been pitterpattering?