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
she could prosper
we could prosper
you could prosper
they could prosper 	I could be prospering
you could be prospering
she could be prospering
we could be prospering
you could be prospering
they could be prospering	I could have prospered
you could have prospered
she 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
she 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 couldn't prosper
you couldn't prosper
she couldn't prosper
we couldn't prosper
you couldn't prosper
they couldn't prosper 	I couldn't be prospering
you couldn't be prospering
she couldn't be prospering
we couldn't be prospering
you couldn't be prospering
they couldn't be prospering	I couldn't have prospered
you couldn't have prospered
she couldn't have prospered
we couldn't have prospered
you couldn't have prospered
they couldn't have prospered	I couldn't have been prospering
you couldn't have been prospering
she couldn't have been prospering
we couldn't have been prospering
you couldn't have been prospering
they couldn't have been prospering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I prosper?
could you prosper?
could she prosper?
could we prosper?
could you prosper?
could they prosper? 	could I be prospering?
could you be prospering?
could she be prospering?
could we be prospering?
could you be prospering?
could they be prospering? 	could I have prospered?
could you have prospered?
could she 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 she 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 	
couldn't I prosper?
couldn't you prosper?
couldn't she prosper?
couldn't we prosper?
couldn't you prosper?
couldn't they prosper? 	couldn't I be prospering?
couldn't you be prospering?
couldn't she be prospering?
couldn't we be prospering?
couldn't you be prospering?
couldn't they be prospering? 	couldn't I have prospered?
couldn't you have prospered?
couldn't she have prospered?
couldn't we have prospered?
couldn't you have prospered?
couldn't they have prospered? 	couldn't I have been prospering?
couldn't you have been prospering?
couldn't she have been prospering?
couldn't we have been prospering?
couldn't you have been prospering?
couldn't they have been prospering?