should brief
Regular verb: brief - briefed- briefed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd brief
you'd brief
he'd brief
we'd brief
you'd brief
they'd brief 	I'd be briefing
you'd be briefing
he'd be briefing
we'd be briefing
you'd be briefing
they'd be briefing	I should've briefed
you should've briefed
he should've briefed
we should've briefed
you should've briefed
they should've briefed	I should've been briefing
you should've been briefing
he should've been briefing
we should've been briefing
you should've been briefing
they should've been briefing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't brief
you shouldn't brief
he shouldn't brief
we shouldn't brief
you shouldn't brief
they shouldn't brief 	I shouldn't be briefing
you shouldn't be briefing
he shouldn't be briefing
we shouldn't be briefing
you shouldn't be briefing
they shouldn't be briefing	I shouldn't have briefed
you shouldn't have briefed
he shouldn't have briefed
we shouldn't have briefed
you shouldn't have briefed
they shouldn't have briefed	I shouldn't have been briefing
you shouldn't have been briefing
he shouldn't have been briefing
we shouldn't have been briefing
you shouldn't have been briefing
they shouldn't have been briefing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I brief?
should you brief?
should he brief?
should we brief?
should you brief?
should they brief? 	should I be briefing?
should you be briefing?
should he be briefing?
should we be briefing?
should you be briefing?
should they be briefing? 	should I have briefed?
should you have briefed?
should he have briefed?
should we have briefed?
should you have briefed?
should they have briefed? 	should I have been briefing?
should you have been briefing?
should he have been briefing?
should we have been briefing?
should you have been briefing?
should they have been briefing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I brief?
shouldn't you brief?
shouldn't he brief?
shouldn't we brief?
shouldn't you brief?
shouldn't they brief? 	shouldn't I be briefing?
shouldn't you be briefing?
shouldn't he be briefing?
shouldn't we be briefing?
shouldn't you be briefing?
shouldn't they be briefing? 	shouldn't I have briefed?
shouldn't you have briefed?
shouldn't he have briefed?
shouldn't we have briefed?
shouldn't you have briefed?
shouldn't they have briefed? 	shouldn't I have been briefing?
shouldn't you have been briefing?
shouldn't he have been briefing?
shouldn't we have been briefing?
shouldn't you have been briefing?
shouldn't they have been briefing?