could proof
Verbe régulier : proof - proofed- proofed
Traduction française : imperméabiliser - corriger les épreuves de 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could proof
you could proof
she could proof
we could proof
you could proof
they could proof 	I could be proofing
you could be proofing
she could be proofing
we could be proofing
you could be proofing
they could be proofing	I could have proofed
you could have proofed
she could have proofed
we could have proofed
you could have proofed
they could have proofed	I could have been proofing
you could have been proofing
she could have been proofing
we could have been proofing
you could have been proofing
they could have been proofing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not proof
you could not proof
she could not proof
we could not proof
you could not proof
they could not proof 	I could not be proofing
you could not be proofing
she could not be proofing
we could not be proofing
you could not be proofing
they could not be proofing	I could not have proofed
you could not have proofed
she could not have proofed
we could not have proofed
you could not have proofed
they could not have proofed	I could not have been proofing
you could not have been proofing
she could not have been proofing
we could not have been proofing
you could not have been proofing
they could not have been proofing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I proof?
could you proof?
could she proof?
could we proof?
could you proof?
could they proof? 	could I be proofing?
could you be proofing?
could she be proofing?
could we be proofing?
could you be proofing?
could they be proofing? 	could I have proofed?
could you have proofed?
could she have proofed?
could we have proofed?
could you have proofed?
could they have proofed? 	could I have been proofing?
could you have been proofing?
could she have been proofing?
could we have been proofing?
could you have been proofing?
could they have been proofing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not proof?
could you not proof?
could she not proof?
could we not proof?
could you not proof?
could they not proof? 	could I not be proofing?
could you not be proofing?
could she not be proofing?
could we not be proofing?
could you not be proofing?
could they not be proofing? 	could I not have proofed?
could you not have proofed?
could she not have proofed?
could we not have proofed?
could you not have proofed?
could they not have proofed? 	could I not have been proofing?
could you not have been proofing?
could she not have been proofing?
could we not have been proofing?
could you not have been proofing?
could they not have been proofing?