should yack
Verbe régulier : yack - yacked- yacked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I'd yack
you'd yack
she'd yack
we'd yack
you'd yack
they'd yack 	I'd be yacking
you'd be yacking
she'd be yacking
we'd be yacking
you'd be yacking
they'd be yacking	I should've yacked
you should've yacked
she should've yacked
we should've yacked
you should've yacked
they should've yacked	I should've been yacking
you should've been yacking
she should've been yacking
we should've been yacking
you should've been yacking
they should've been yacking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I shouldn't yack
you shouldn't yack
she shouldn't yack
we shouldn't yack
you shouldn't yack
they shouldn't yack 	I shouldn't be yacking
you shouldn't be yacking
she shouldn't be yacking
we shouldn't be yacking
you shouldn't be yacking
they shouldn't be yacking	I shouldn't have yacked
you shouldn't have yacked
she shouldn't have yacked
we shouldn't have yacked
you shouldn't have yacked
they shouldn't have yacked	I shouldn't have been yacking
you shouldn't have been yacking
she shouldn't have been yacking
we shouldn't have been yacking
you shouldn't have been yacking
they shouldn't have been yacking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I yack?
should you yack?
should she yack?
should we yack?
should you yack?
should they yack? 	should I be yacking?
should you be yacking?
should she be yacking?
should we be yacking?
should you be yacking?
should they be yacking? 	should I have yacked?
should you have yacked?
should she have yacked?
should we have yacked?
should you have yacked?
should they have yacked? 	should I have been yacking?
should you have been yacking?
should she have been yacking?
should we have been yacking?
should you have been yacking?
should they have been yacking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
shouldn't I yack?
shouldn't you yack?
shouldn't she yack?
shouldn't we yack?
shouldn't you yack?
shouldn't they yack? 	shouldn't I be yacking?
shouldn't you be yacking?
shouldn't she be yacking?
shouldn't we be yacking?
shouldn't you be yacking?
shouldn't they be yacking? 	shouldn't I have yacked?
shouldn't you have yacked?
shouldn't she have yacked?
shouldn't we have yacked?
shouldn't you have yacked?
shouldn't they have yacked? 	shouldn't I have been yacking?
shouldn't you have been yacking?
shouldn't she have been yacking?
shouldn't we have been yacking?
shouldn't you have been yacking?
shouldn't they have been yacking?