should witness
Verbe régulier : witness - witnessed- witnessed
Traduction française : être témoin de - témoigner 

Affirmation 	
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I'd witness
you'd witness
he'd witness
we'd witness
you'd witness
they'd witness 	I'd be witnessing
you'd be witnessing
he'd be witnessing
we'd be witnessing
you'd be witnessing
they'd be witnessing	I should've witnessed
you should've witnessed
he should've witnessed
we should've witnessed
you should've witnessed
they should've witnessed	I should've been witnessing
you should've been witnessing
he should've been witnessing
we should've been witnessing
you should've been witnessing
they should've been witnessing	

Négation 	
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I shouldn't witness
you shouldn't witness
he shouldn't witness
we shouldn't witness
you shouldn't witness
they shouldn't witness 	I shouldn't be witnessing
you shouldn't be witnessing
he shouldn't be witnessing
we shouldn't be witnessing
you shouldn't be witnessing
they shouldn't be witnessing	I shouldn't have witnessed
you shouldn't have witnessed
he shouldn't have witnessed
we shouldn't have witnessed
you shouldn't have witnessed
they shouldn't have witnessed	I shouldn't have been witnessing
you shouldn't have been witnessing
he shouldn't have been witnessing
we shouldn't have been witnessing
you shouldn't have been witnessing
they shouldn't have been witnessing	

Forme interrogative 	
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should I witness?
should you witness?
should he witness?
should we witness?
should you witness?
should they witness? 	should I be witnessing?
should you be witnessing?
should he be witnessing?
should we be witnessing?
should you be witnessing?
should they be witnessing? 	should I have witnessed?
should you have witnessed?
should he have witnessed?
should we have witnessed?
should you have witnessed?
should they have witnessed? 	should I have been witnessing?
should you have been witnessing?
should he have been witnessing?
should we have been witnessing?
should you have been witnessing?
should they have been witnessing? 	

Forme interro-négative 	
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shouldn't I witness?
shouldn't you witness?
shouldn't he witness?
shouldn't we witness?
shouldn't you witness?
shouldn't they witness? 	shouldn't I be witnessing?
shouldn't you be witnessing?
shouldn't he be witnessing?
shouldn't we be witnessing?
shouldn't you be witnessing?
shouldn't they be witnessing? 	shouldn't I have witnessed?
shouldn't you have witnessed?
shouldn't he have witnessed?
shouldn't we have witnessed?
shouldn't you have witnessed?
shouldn't they have witnessed? 	shouldn't I have been witnessing?
shouldn't you have been witnessing?
shouldn't he have been witnessing?
shouldn't we have been witnessing?
shouldn't you have been witnessing?
shouldn't they have been witnessing?