could proof
Regelmä&szlig;iges Verb: proof - proofed- proofed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit 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	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't proof
you couldn't proof
she couldn't proof
we couldn't proof
you couldn't proof
they couldn't proof 	I couldn't be proofing
you couldn't be proofing
she couldn't be proofing
we couldn't be proofing
you couldn't be proofing
they couldn't be proofing	I couldn't have proofed
you couldn't have proofed
she couldn't have proofed
we couldn't have proofed
you couldn't have proofed
they couldn't have proofed	I couldn't have been proofing
you couldn't have been proofing
she couldn't have been proofing
we couldn't have been proofing
you couldn't have been proofing
they couldn't have been proofing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit 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? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I proof?
couldn't you proof?
couldn't she proof?
couldn't we proof?
couldn't you proof?
couldn't they proof? 	couldn't I be proofing?
couldn't you be proofing?
couldn't she be proofing?
couldn't we be proofing?
couldn't you be proofing?
couldn't they be proofing? 	couldn't I have proofed?
couldn't you have proofed?
couldn't she have proofed?
couldn't we have proofed?
couldn't you have proofed?
couldn't they have proofed? 	couldn't I have been proofing?
couldn't you have been proofing?
couldn't she have been proofing?
couldn't we have been proofing?
couldn't you have been proofing?
couldn't they have been proofing?