could prong
Verbe régulier : prong - pronged- pronged

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could prong
you could prong
he could prong
we could prong
you could prong
they could prong 	I could be pronging
you could be pronging
he could be pronging
we could be pronging
you could be pronging
they could be pronging	I could have pronged
you could have pronged
he could have pronged
we could have pronged
you could have pronged
they could have pronged	I could have been pronging
you could have been pronging
he could have been pronging
we could have been pronging
you could have been pronging
they could have been pronging	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't prong
you couldn't prong
he couldn't prong
we couldn't prong
you couldn't prong
they couldn't prong 	I couldn't be pronging
you couldn't be pronging
he couldn't be pronging
we couldn't be pronging
you couldn't be pronging
they couldn't be pronging	I couldn't have pronged
you couldn't have pronged
he couldn't have pronged
we couldn't have pronged
you couldn't have pronged
they couldn't have pronged	I couldn't have been pronging
you couldn't have been pronging
he couldn't have been pronging
we couldn't have been pronging
you couldn't have been pronging
they couldn't have been pronging	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I prong?
could you prong?
could he prong?
could we prong?
could you prong?
could they prong? 	could I be pronging?
could you be pronging?
could he be pronging?
could we be pronging?
could you be pronging?
could they be pronging? 	could I have pronged?
could you have pronged?
could he have pronged?
could we have pronged?
could you have pronged?
could they have pronged? 	could I have been pronging?
could you have been pronging?
could he have been pronging?
could we have been pronging?
could you have been pronging?
could they have been pronging? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I prong?
couldn't you prong?
couldn't he prong?
couldn't we prong?
couldn't you prong?
couldn't they prong? 	couldn't I be pronging?
couldn't you be pronging?
couldn't he be pronging?
couldn't we be pronging?
couldn't you be pronging?
couldn't they be pronging? 	couldn't I have pronged?
couldn't you have pronged?
couldn't he have pronged?
couldn't we have pronged?
couldn't you have pronged?
couldn't they have pronged? 	couldn't I have been pronging?
couldn't you have been pronging?
couldn't he have been pronging?
couldn't we have been pronging?
couldn't you have been pronging?
couldn't they have been pronging?