should stiff
Verbe régulier : stiff - stiffed- stiffed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I'd stiff
you'd stiff
he'd stiff
we'd stiff
you'd stiff
they'd stiff 	I'd be stiffing
you'd be stiffing
he'd be stiffing
we'd be stiffing
you'd be stiffing
they'd be stiffing	I should've stiffed
you should've stiffed
he should've stiffed
we should've stiffed
you should've stiffed
they should've stiffed	I should've been stiffing
you should've been stiffing
he should've been stiffing
we should've been stiffing
you should've been stiffing
they should've been stiffing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I shouldn't stiff
you shouldn't stiff
he shouldn't stiff
we shouldn't stiff
you shouldn't stiff
they shouldn't stiff 	I shouldn't be stiffing
you shouldn't be stiffing
he shouldn't be stiffing
we shouldn't be stiffing
you shouldn't be stiffing
they shouldn't be stiffing	I shouldn't have stiffed
you shouldn't have stiffed
he shouldn't have stiffed
we shouldn't have stiffed
you shouldn't have stiffed
they shouldn't have stiffed	I shouldn't have been stiffing
you shouldn't have been stiffing
he shouldn't have been stiffing
we shouldn't have been stiffing
you shouldn't have been stiffing
they shouldn't have been stiffing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I stiff?
should you stiff?
should he stiff?
should we stiff?
should you stiff?
should they stiff? 	should I be stiffing?
should you be stiffing?
should he be stiffing?
should we be stiffing?
should you be stiffing?
should they be stiffing? 	should I have stiffed?
should you have stiffed?
should he have stiffed?
should we have stiffed?
should you have stiffed?
should they have stiffed? 	should I have been stiffing?
should you have been stiffing?
should he have been stiffing?
should we have been stiffing?
should you have been stiffing?
should they have been stiffing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
shouldn't I stiff?
shouldn't you stiff?
shouldn't he stiff?
shouldn't we stiff?
shouldn't you stiff?
shouldn't they stiff? 	shouldn't I be stiffing?
shouldn't you be stiffing?
shouldn't he be stiffing?
shouldn't we be stiffing?
shouldn't you be stiffing?
shouldn't they be stiffing? 	shouldn't I have stiffed?
shouldn't you have stiffed?
shouldn't he have stiffed?
shouldn't we have stiffed?
shouldn't you have stiffed?
shouldn't they have stiffed? 	shouldn't I have been stiffing?
shouldn't you have been stiffing?
shouldn't he have been stiffing?
shouldn't we have been stiffing?
shouldn't you have been stiffing?
shouldn't they have been stiffing?