could brief
Regelmä&szlig;iges Verb: brief - briefed- briefed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could brief
you could brief
she could brief
we could brief
you could brief
they could brief 	I could be briefing
you could be briefing
she could be briefing
we could be briefing
you could be briefing
they could be briefing	I could have briefed
you could have briefed
she could have briefed
we could have briefed
you could have briefed
they could have briefed	I could have been briefing
you could have been briefing
she could have been briefing
we could have been briefing
you could have been briefing
they could have been briefing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not brief
you could not brief
she could not brief
we could not brief
you could not brief
they could not brief 	I could not be briefing
you could not be briefing
she could not be briefing
we could not be briefing
you could not be briefing
they could not be briefing	I could not have briefed
you could not have briefed
she could not have briefed
we could not have briefed
you could not have briefed
they could not have briefed	I could not have been briefing
you could not have been briefing
she could not have been briefing
we could not have been briefing
you could not have been briefing
they could not have been briefing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I brief?
could you brief?
could she brief?
could we brief?
could you brief?
could they brief? 	could I be briefing?
could you be briefing?
could she be briefing?
could we be briefing?
could you be briefing?
could they be briefing? 	could I have briefed?
could you have briefed?
could she have briefed?
could we have briefed?
could you have briefed?
could they have briefed? 	could I have been briefing?
could you have been briefing?
could she have been briefing?
could we have been briefing?
could you have been briefing?
could they have been briefing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not brief?
could you not brief?
could she not brief?
could we not brief?
could you not brief?
could they not brief? 	could I not be briefing?
could you not be briefing?
could she not be briefing?
could we not be briefing?
could you not be briefing?
could they not be briefing? 	could I not have briefed?
could you not have briefed?
could she not have briefed?
could we not have briefed?
could you not have briefed?
could they not have briefed? 	could I not have been briefing?
could you not have been briefing?
could she not have been briefing?
could we not have been briefing?
could you not have been briefing?
could they not have been briefing?