should invigilate
Regular verb: invigilate - invigilated- invigilated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd invigilate
you'd invigilate
he'd invigilate
we'd invigilate
you'd invigilate
they'd invigilate 	I'd be invigilating
you'd be invigilating
he'd be invigilating
we'd be invigilating
you'd be invigilating
they'd be invigilating	I should've invigilated
you should've invigilated
he should've invigilated
we should've invigilated
you should've invigilated
they should've invigilated	I should've been invigilating
you should've been invigilating
he should've been invigilating
we should've been invigilating
you should've been invigilating
they should've been invigilating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't invigilate
you shouldn't invigilate
he shouldn't invigilate
we shouldn't invigilate
you shouldn't invigilate
they shouldn't invigilate 	I shouldn't be invigilating
you shouldn't be invigilating
he shouldn't be invigilating
we shouldn't be invigilating
you shouldn't be invigilating
they shouldn't be invigilating	I shouldn't have invigilated
you shouldn't have invigilated
he shouldn't have invigilated
we shouldn't have invigilated
you shouldn't have invigilated
they shouldn't have invigilated	I shouldn't have been invigilating
you shouldn't have been invigilating
he shouldn't have been invigilating
we shouldn't have been invigilating
you shouldn't have been invigilating
they shouldn't have been invigilating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I invigilate?
should you invigilate?
should he invigilate?
should we invigilate?
should you invigilate?
should they invigilate? 	should I be invigilating?
should you be invigilating?
should he be invigilating?
should we be invigilating?
should you be invigilating?
should they be invigilating? 	should I have invigilated?
should you have invigilated?
should he have invigilated?
should we have invigilated?
should you have invigilated?
should they have invigilated? 	should I have been invigilating?
should you have been invigilating?
should he have been invigilating?
should we have been invigilating?
should you have been invigilating?
should they have been invigilating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I invigilate?
shouldn't you invigilate?
shouldn't he invigilate?
shouldn't we invigilate?
shouldn't you invigilate?
shouldn't they invigilate? 	shouldn't I be invigilating?
shouldn't you be invigilating?
shouldn't he be invigilating?
shouldn't we be invigilating?
shouldn't you be invigilating?
shouldn't they be invigilating? 	shouldn't I have invigilated?
shouldn't you have invigilated?
shouldn't he have invigilated?
shouldn't we have invigilated?
shouldn't you have invigilated?
shouldn't they have invigilated? 	shouldn't I have been invigilating?
shouldn't you have been invigilating?
shouldn't he have been invigilating?
shouldn't we have been invigilating?
shouldn't you have been invigilating?
shouldn't they have been invigilating?