should tabulate
Regular verb: tabulate - tabulated- tabulated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd tabulate
you'd tabulate
she'd tabulate
we'd tabulate
you'd tabulate
they'd tabulate 	I'd be tabulating
you'd be tabulating
she'd be tabulating
we'd be tabulating
you'd be tabulating
they'd be tabulating	I should've tabulated
you should've tabulated
she 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
she 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
she 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
she 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
she 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
she 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 she tabulate?
should we tabulate?
should you tabulate?
should they tabulate? 	should I be tabulating?
should you be tabulating?
should she be tabulating?
should we be tabulating?
should you be tabulating?
should they be tabulating? 	should I have tabulated?
should you have tabulated?
should she 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 she 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 she 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 she 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 she 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 she have been tabulating?
shouldn't we have been tabulating?
shouldn't you have been tabulating?
shouldn't they have been tabulating?