should catalyse
Regular verb: catalyse - catalysed- catalysed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd catalyse
you'd catalyse
she'd catalyse
we'd catalyse
you'd catalyse
they'd catalyse 	I'd be catalysing
you'd be catalysing
she'd be catalysing
we'd be catalysing
you'd be catalysing
they'd be catalysing	I should've catalysed
you should've catalysed
she should've catalysed
we should've catalysed
you should've catalysed
they should've catalysed	I should've been catalysing
you should've been catalysing
she should've been catalysing
we should've been catalysing
you should've been catalysing
they should've been catalysing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't catalyse
you shouldn't catalyse
she shouldn't catalyse
we shouldn't catalyse
you shouldn't catalyse
they shouldn't catalyse 	I shouldn't be catalysing
you shouldn't be catalysing
she shouldn't be catalysing
we shouldn't be catalysing
you shouldn't be catalysing
they shouldn't be catalysing	I shouldn't have catalysed
you shouldn't have catalysed
she shouldn't have catalysed
we shouldn't have catalysed
you shouldn't have catalysed
they shouldn't have catalysed	I shouldn't have been catalysing
you shouldn't have been catalysing
she shouldn't have been catalysing
we shouldn't have been catalysing
you shouldn't have been catalysing
they shouldn't have been catalysing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I catalyse?
should you catalyse?
should she catalyse?
should we catalyse?
should you catalyse?
should they catalyse? 	should I be catalysing?
should you be catalysing?
should she be catalysing?
should we be catalysing?
should you be catalysing?
should they be catalysing? 	should I have catalysed?
should you have catalysed?
should she have catalysed?
should we have catalysed?
should you have catalysed?
should they have catalysed? 	should I have been catalysing?
should you have been catalysing?
should she have been catalysing?
should we have been catalysing?
should you have been catalysing?
should they have been catalysing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I catalyse?
shouldn't you catalyse?
shouldn't she catalyse?
shouldn't we catalyse?
shouldn't you catalyse?
shouldn't they catalyse? 	shouldn't I be catalysing?
shouldn't you be catalysing?
shouldn't she be catalysing?
shouldn't we be catalysing?
shouldn't you be catalysing?
shouldn't they be catalysing? 	shouldn't I have catalysed?
shouldn't you have catalysed?
shouldn't she have catalysed?
shouldn't we have catalysed?
shouldn't you have catalysed?
shouldn't they have catalysed? 	shouldn't I have been catalysing?
shouldn't you have been catalysing?
shouldn't she have been catalysing?
shouldn't we have been catalysing?
shouldn't you have been catalysing?
shouldn't they have been catalysing?