should reinvestigate
Regular verb: reinvestigate - reinvestigated- reinvestigated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd reinvestigate
you'd reinvestigate
he'd reinvestigate
we'd reinvestigate
you'd reinvestigate
they'd reinvestigate 	I'd be reinvestigating
you'd be reinvestigating
he'd be reinvestigating
we'd be reinvestigating
you'd be reinvestigating
they'd be reinvestigating	I should've reinvestigated
you should've reinvestigated
he should've reinvestigated
we should've reinvestigated
you should've reinvestigated
they should've reinvestigated	I should've been reinvestigating
you should've been reinvestigating
he should've been reinvestigating
we should've been reinvestigating
you should've been reinvestigating
they should've been reinvestigating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't reinvestigate
you shouldn't reinvestigate
he shouldn't reinvestigate
we shouldn't reinvestigate
you shouldn't reinvestigate
they shouldn't reinvestigate 	I shouldn't be reinvestigating
you shouldn't be reinvestigating
he shouldn't be reinvestigating
we shouldn't be reinvestigating
you shouldn't be reinvestigating
they shouldn't be reinvestigating	I shouldn't have reinvestigated
you shouldn't have reinvestigated
he shouldn't have reinvestigated
we shouldn't have reinvestigated
you shouldn't have reinvestigated
they shouldn't have reinvestigated	I shouldn't have been reinvestigating
you shouldn't have been reinvestigating
he shouldn't have been reinvestigating
we shouldn't have been reinvestigating
you shouldn't have been reinvestigating
they shouldn't have been reinvestigating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I reinvestigate?
should you reinvestigate?
should he reinvestigate?
should we reinvestigate?
should you reinvestigate?
should they reinvestigate? 	should I be reinvestigating?
should you be reinvestigating?
should he be reinvestigating?
should we be reinvestigating?
should you be reinvestigating?
should they be reinvestigating? 	should I have reinvestigated?
should you have reinvestigated?
should he have reinvestigated?
should we have reinvestigated?
should you have reinvestigated?
should they have reinvestigated? 	should I have been reinvestigating?
should you have been reinvestigating?
should he have been reinvestigating?
should we have been reinvestigating?
should you have been reinvestigating?
should they have been reinvestigating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I reinvestigate?
shouldn't you reinvestigate?
shouldn't he reinvestigate?
shouldn't we reinvestigate?
shouldn't you reinvestigate?
shouldn't they reinvestigate? 	shouldn't I be reinvestigating?
shouldn't you be reinvestigating?
shouldn't he be reinvestigating?
shouldn't we be reinvestigating?
shouldn't you be reinvestigating?
shouldn't they be reinvestigating? 	shouldn't I have reinvestigated?
shouldn't you have reinvestigated?
shouldn't he have reinvestigated?
shouldn't we have reinvestigated?
shouldn't you have reinvestigated?
shouldn't they have reinvestigated? 	shouldn't I have been reinvestigating?
shouldn't you have been reinvestigating?
shouldn't he have been reinvestigating?
shouldn't we have been reinvestigating?
shouldn't you have been reinvestigating?
shouldn't they have been reinvestigating?