should interpolate
Regular verb: interpolate - interpolated- interpolated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd interpolate
you'd interpolate
he'd interpolate
we'd interpolate
you'd interpolate
they'd interpolate 	I'd be interpolating
you'd be interpolating
he'd be interpolating
we'd be interpolating
you'd be interpolating
they'd be interpolating	I should've interpolated
you should've interpolated
he should've interpolated
we should've interpolated
you should've interpolated
they should've interpolated	I should've been interpolating
you should've been interpolating
he should've been interpolating
we should've been interpolating
you should've been interpolating
they should've been interpolating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't interpolate
you shouldn't interpolate
he shouldn't interpolate
we shouldn't interpolate
you shouldn't interpolate
they shouldn't interpolate 	I shouldn't be interpolating
you shouldn't be interpolating
he shouldn't be interpolating
we shouldn't be interpolating
you shouldn't be interpolating
they shouldn't be interpolating	I shouldn't have interpolated
you shouldn't have interpolated
he shouldn't have interpolated
we shouldn't have interpolated
you shouldn't have interpolated
they shouldn't have interpolated	I shouldn't have been interpolating
you shouldn't have been interpolating
he shouldn't have been interpolating
we shouldn't have been interpolating
you shouldn't have been interpolating
they shouldn't have been interpolating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I interpolate?
should you interpolate?
should he interpolate?
should we interpolate?
should you interpolate?
should they interpolate? 	should I be interpolating?
should you be interpolating?
should he be interpolating?
should we be interpolating?
should you be interpolating?
should they be interpolating? 	should I have interpolated?
should you have interpolated?
should he have interpolated?
should we have interpolated?
should you have interpolated?
should they have interpolated? 	should I have been interpolating?
should you have been interpolating?
should he have been interpolating?
should we have been interpolating?
should you have been interpolating?
should they have been interpolating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I interpolate?
shouldn't you interpolate?
shouldn't he interpolate?
shouldn't we interpolate?
shouldn't you interpolate?
shouldn't they interpolate? 	shouldn't I be interpolating?
shouldn't you be interpolating?
shouldn't he be interpolating?
shouldn't we be interpolating?
shouldn't you be interpolating?
shouldn't they be interpolating? 	shouldn't I have interpolated?
shouldn't you have interpolated?
shouldn't he have interpolated?
shouldn't we have interpolated?
shouldn't you have interpolated?
shouldn't they have interpolated? 	shouldn't I have been interpolating?
shouldn't you have been interpolating?
shouldn't he have been interpolating?
shouldn't we have been interpolating?
shouldn't you have been interpolating?
shouldn't they have been interpolating?