could prosper
Verbe régulier : prosper - prospered- prospered
Traduction française : prospérer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could prosper
you could prosper
he could prosper
we could prosper
you could prosper
they could prosper 	I could be prospering
you could be prospering
he could be prospering
we could be prospering
you could be prospering
they could be prospering	I could have prospered
you could have prospered
he could have prospered
we could have prospered
you could have prospered
they could have prospered	I could have been prospering
you could have been prospering
he could have been prospering
we could have been prospering
you could have been prospering
they could have been prospering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not prosper
you could not prosper
he could not prosper
we could not prosper
you could not prosper
they could not prosper 	I could not be prospering
you could not be prospering
he could not be prospering
we could not be prospering
you could not be prospering
they could not be prospering	I could not have prospered
you could not have prospered
he could not have prospered
we could not have prospered
you could not have prospered
they could not have prospered	I could not have been prospering
you could not have been prospering
he could not have been prospering
we could not have been prospering
you could not have been prospering
they could not have been prospering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I prosper?
could you prosper?
could he prosper?
could we prosper?
could you prosper?
could they prosper? 	could I be prospering?
could you be prospering?
could he be prospering?
could we be prospering?
could you be prospering?
could they be prospering? 	could I have prospered?
could you have prospered?
could he have prospered?
could we have prospered?
could you have prospered?
could they have prospered? 	could I have been prospering?
could you have been prospering?
could he have been prospering?
could we have been prospering?
could you have been prospering?
could they have been prospering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not prosper?
could you not prosper?
could he not prosper?
could we not prosper?
could you not prosper?
could they not prosper? 	could I not be prospering?
could you not be prospering?
could he not be prospering?
could we not be prospering?
could you not be prospering?
could they not be prospering? 	could I not have prospered?
could you not have prospered?
could he not have prospered?
could we not have prospered?
could you not have prospered?
could they not have prospered? 	could I not have been prospering?
could you not have been prospering?
could he not have been prospering?
could we not have been prospering?
could you not have been prospering?
could they not have been prospering?