should cat
Regular verb: cat - cated- cated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd cat
you'd cat
she'd cat
we'd cat
you'd cat
they'd cat 	I'd be cating
you'd be cating
she'd be cating
we'd be cating
you'd be cating
they'd be cating	I should've cated
you should've cated
she should've cated
we should've cated
you should've cated
they should've cated	I should've been cating
you should've been cating
she should've been cating
we should've been cating
you should've been cating
they should've been cating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't cat
you shouldn't cat
she shouldn't cat
we shouldn't cat
you shouldn't cat
they shouldn't cat 	I shouldn't be cating
you shouldn't be cating
she shouldn't be cating
we shouldn't be cating
you shouldn't be cating
they shouldn't be cating	I shouldn't have cated
you shouldn't have cated
she shouldn't have cated
we shouldn't have cated
you shouldn't have cated
they shouldn't have cated	I shouldn't have been cating
you shouldn't have been cating
she shouldn't have been cating
we shouldn't have been cating
you shouldn't have been cating
they shouldn't have been cating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I cat?
should you cat?
should she cat?
should we cat?
should you cat?
should they cat? 	should I be cating?
should you be cating?
should she be cating?
should we be cating?
should you be cating?
should they be cating? 	should I have cated?
should you have cated?
should she have cated?
should we have cated?
should you have cated?
should they have cated? 	should I have been cating?
should you have been cating?
should she have been cating?
should we have been cating?
should you have been cating?
should they have been cating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I cat?
shouldn't you cat?
shouldn't she cat?
shouldn't we cat?
shouldn't you cat?
shouldn't they cat? 	shouldn't I be cating?
shouldn't you be cating?
shouldn't she be cating?
shouldn't we be cating?
shouldn't you be cating?
shouldn't they be cating? 	shouldn't I have cated?
shouldn't you have cated?
shouldn't she have cated?
shouldn't we have cated?
shouldn't you have cated?
shouldn't they have cated? 	shouldn't I have been cating?
shouldn't you have been cating?
shouldn't she have been cating?
shouldn't we have been cating?
shouldn't you have been cating?
shouldn't they have been cating?