English verb conjugation
SHOULD RETESTIFY

Regular verb: retestify - retestified - retestified

Affirmation

Simple form	V-ing form
I'd retestify you'd retestify she'd retestify we'd retestify you'd retestify they'd retestify	I'd be retestifying you'd be retestifying she'd be retestifying we'd be retestifying you'd be retestifying they'd be retestifying
Perfect	V-ing perfect
I should've retestified you should've retestified she should've retestified we should've retestified you should've retestified they should've retestified	I should've been retestifying you should've been retestifying she should've been retestifying we should've been retestifying you should've been retestifying they should've been retestifying

Negation

Simple form	V-ing form
I shouldn't retestify you shouldn't retestify she shouldn't retestify we shouldn't retestify you shouldn't retestify they shouldn't retestify	I shouldn't be retestifying you shouldn't be retestifying she shouldn't be retestifying we shouldn't be retestifying you shouldn't be retestifying they shouldn't be retestifying
Perfect	V-ing perfect
I shouldn't have retestified you shouldn't have retestified she shouldn't have retestified we shouldn't have retestified you shouldn't have retestified they shouldn't have retestified	I shouldn't have been retestifying you shouldn't have been retestifying she shouldn't have been retestifying we shouldn't have been retestifying you shouldn't have been retestifying they shouldn't have been retestifying

Interrogative form

Simple form	V-ing form
should I retestify? should you retestify? should she retestify? should we retestify? should you retestify? should they retestify?	should I be retestifying? should you be retestifying? should she be retestifying? should we be retestifying? should you be retestifying? should they be retestifying?
Perfect	V-ing perfect
should I have retestified? should you have retestified? should she have retestified? should we have retestified? should you have retestified? should they have retestified?	should I have been retestifying? should you have been retestifying? should she have been retestifying? should we have been retestifying? should you have been retestifying? should they have been retestifying?

Interro-negative form

Simple form	V-ing form
shouldn't I retestify? shouldn't you retestify? shouldn't she retestify? shouldn't we retestify? shouldn't you retestify? shouldn't they retestify?	shouldn't I be retestifying? shouldn't you be retestifying? shouldn't she be retestifying? shouldn't we be retestifying? shouldn't you be retestifying? shouldn't they be retestifying?
Perfect	V-ing perfect
shouldn't I have retestified? shouldn't you have retestified? shouldn't she have retestified? shouldn't we have retestified? shouldn't you have retestified? shouldn't they have retestified?	shouldn't I have been retestifying? shouldn't you have been retestifying? shouldn't she have been retestifying? shouldn't we have been retestifying? shouldn't you have been retestifying? shouldn't they have been retestifying?