should certify
Regular verb: certify - certified- certified

Affirmation 	
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I'd certify
you'd certify
she'd certify
we'd certify
you'd certify
they'd certify 	I'd be certifying
you'd be certifying
she'd be certifying
we'd be certifying
you'd be certifying
they'd be certifying	I should've certified
you should've certified
she should've certified
we should've certified
you should've certified
they should've certified	I should've been certifying
you should've been certifying
she should've been certifying
we should've been certifying
you should've been certifying
they should've been certifying	

Negation 	
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I shouldn't certify
you shouldn't certify
she shouldn't certify
we shouldn't certify
you shouldn't certify
they shouldn't certify 	I shouldn't be certifying
you shouldn't be certifying
she shouldn't be certifying
we shouldn't be certifying
you shouldn't be certifying
they shouldn't be certifying	I shouldn't have certified
you shouldn't have certified
she shouldn't have certified
we shouldn't have certified
you shouldn't have certified
they shouldn't have certified	I shouldn't have been certifying
you shouldn't have been certifying
she shouldn't have been certifying
we shouldn't have been certifying
you shouldn't have been certifying
they shouldn't have been certifying	

Interrogative form 	
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should I certify?
should you certify?
should she certify?
should we certify?
should you certify?
should they certify? 	should I be certifying?
should you be certifying?
should she be certifying?
should we be certifying?
should you be certifying?
should they be certifying? 	should I have certified?
should you have certified?
should she have certified?
should we have certified?
should you have certified?
should they have certified? 	should I have been certifying?
should you have been certifying?
should she have been certifying?
should we have been certifying?
should you have been certifying?
should they have been certifying? 	

Interro-negative form 	
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shouldn't I certify?
shouldn't you certify?
shouldn't she certify?
shouldn't we certify?
shouldn't you certify?
shouldn't they certify? 	shouldn't I be certifying?
shouldn't you be certifying?
shouldn't she be certifying?
shouldn't we be certifying?
shouldn't you be certifying?
shouldn't they be certifying? 	shouldn't I have certified?
shouldn't you have certified?
shouldn't she have certified?
shouldn't we have certified?
shouldn't you have certified?
shouldn't they have certified? 	shouldn't I have been certifying?
shouldn't you have been certifying?
shouldn't she have been certifying?
shouldn't we have been certifying?
shouldn't you have been certifying?
shouldn't they have been certifying?