should retest
Regular verb: retest - retested- retested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd retest
you'd retest
she'd retest
we'd retest
you'd retest
they'd retest 	I'd be retesting
you'd be retesting
she'd be retesting
we'd be retesting
you'd be retesting
they'd be retesting	I should've retested
you should've retested
she should've retested
we should've retested
you should've retested
they should've retested	I should've been retesting
you should've been retesting
she should've been retesting
we should've been retesting
you should've been retesting
they should've been retesting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't retest
you shouldn't retest
she shouldn't retest
we shouldn't retest
you shouldn't retest
they shouldn't retest 	I shouldn't be retesting
you shouldn't be retesting
she shouldn't be retesting
we shouldn't be retesting
you shouldn't be retesting
they shouldn't be retesting	I shouldn't have retested
you shouldn't have retested
she shouldn't have retested
we shouldn't have retested
you shouldn't have retested
they shouldn't have retested	I shouldn't have been retesting
you shouldn't have been retesting
she shouldn't have been retesting
we shouldn't have been retesting
you shouldn't have been retesting
they shouldn't have been retesting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I retest?
should you retest?
should she retest?
should we retest?
should you retest?
should they retest? 	should I be retesting?
should you be retesting?
should she be retesting?
should we be retesting?
should you be retesting?
should they be retesting? 	should I have retested?
should you have retested?
should she have retested?
should we have retested?
should you have retested?
should they have retested? 	should I have been retesting?
should you have been retesting?
should she have been retesting?
should we have been retesting?
should you have been retesting?
should they have been retesting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I retest?
shouldn't you retest?
shouldn't she retest?
shouldn't we retest?
shouldn't you retest?
shouldn't they retest? 	shouldn't I be retesting?
shouldn't you be retesting?
shouldn't she be retesting?
shouldn't we be retesting?
shouldn't you be retesting?
shouldn't they be retesting? 	shouldn't I have retested?
shouldn't you have retested?
shouldn't she have retested?
shouldn't we have retested?
shouldn't you have retested?
shouldn't they have retested? 	shouldn't I have been retesting?
shouldn't you have been retesting?
shouldn't she have been retesting?
shouldn't we have been retesting?
shouldn't you have been retesting?
shouldn't they have been retesting?