should tabulate
Regular verb: tabulate - tabulated- tabulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tabulate
you'd tabulate
he'd tabulate
we'd tabulate
you'd tabulate
they'd tabulate 	I'd be tabulating
you'd be tabulating
he'd be tabulating
we'd be tabulating
you'd be tabulating
they'd be tabulating	I should've tabulated
you should've tabulated
he should've tabulated
we should've tabulated
you should've tabulated
they should've tabulated	I should've been tabulating
you should've been tabulating
he should've been tabulating
we should've been tabulating
you should've been tabulating
they should've been tabulating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't tabulate
you shouldn't tabulate
he shouldn't tabulate
we shouldn't tabulate
you shouldn't tabulate
they shouldn't tabulate 	I shouldn't be tabulating
you shouldn't be tabulating
he shouldn't be tabulating
we shouldn't be tabulating
you shouldn't be tabulating
they shouldn't be tabulating	I shouldn't have tabulated
you shouldn't have tabulated
he shouldn't have tabulated
we shouldn't have tabulated
you shouldn't have tabulated
they shouldn't have tabulated	I shouldn't have been tabulating
you shouldn't have been tabulating
he shouldn't have been tabulating
we shouldn't have been tabulating
you shouldn't have been tabulating
they shouldn't have been tabulating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I tabulate?
should you tabulate?
should he tabulate?
should we tabulate?
should you tabulate?
should they tabulate? 	should I be tabulating?
should you be tabulating?
should he be tabulating?
should we be tabulating?
should you be tabulating?
should they be tabulating? 	should I have tabulated?
should you have tabulated?
should he have tabulated?
should we have tabulated?
should you have tabulated?
should they have tabulated? 	should I have been tabulating?
should you have been tabulating?
should he have been tabulating?
should we have been tabulating?
should you have been tabulating?
should they have been tabulating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I tabulate?
shouldn't you tabulate?
shouldn't he tabulate?
shouldn't we tabulate?
shouldn't you tabulate?
shouldn't they tabulate? 	shouldn't I be tabulating?
shouldn't you be tabulating?
shouldn't he be tabulating?
shouldn't we be tabulating?
shouldn't you be tabulating?
shouldn't they be tabulating? 	shouldn't I have tabulated?
shouldn't you have tabulated?
shouldn't he have tabulated?
shouldn't we have tabulated?
shouldn't you have tabulated?
shouldn't they have tabulated? 	shouldn't I have been tabulating?
shouldn't you have been tabulating?
shouldn't he have been tabulating?
shouldn't we have been tabulating?
shouldn't you have been tabulating?
shouldn't they have been tabulating?