should catalyze
Regular verb: catalyze - catalyzed- catalyzed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd catalyze
you'd catalyze
he'd catalyze
we'd catalyze
you'd catalyze
they'd catalyze 	I'd be catalyzing
you'd be catalyzing
he'd be catalyzing
we'd be catalyzing
you'd be catalyzing
they'd be catalyzing	I should've catalyzed
you should've catalyzed
he should've catalyzed
we should've catalyzed
you should've catalyzed
they should've catalyzed	I should've been catalyzing
you should've been catalyzing
he should've been catalyzing
we should've been catalyzing
you should've been catalyzing
they should've been catalyzing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't catalyze
you shouldn't catalyze
he shouldn't catalyze
we shouldn't catalyze
you shouldn't catalyze
they shouldn't catalyze 	I shouldn't be catalyzing
you shouldn't be catalyzing
he shouldn't be catalyzing
we shouldn't be catalyzing
you shouldn't be catalyzing
they shouldn't be catalyzing	I shouldn't have catalyzed
you shouldn't have catalyzed
he shouldn't have catalyzed
we shouldn't have catalyzed
you shouldn't have catalyzed
they shouldn't have catalyzed	I shouldn't have been catalyzing
you shouldn't have been catalyzing
he shouldn't have been catalyzing
we shouldn't have been catalyzing
you shouldn't have been catalyzing
they shouldn't have been catalyzing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I catalyze?
should you catalyze?
should he catalyze?
should we catalyze?
should you catalyze?
should they catalyze? 	should I be catalyzing?
should you be catalyzing?
should he be catalyzing?
should we be catalyzing?
should you be catalyzing?
should they be catalyzing? 	should I have catalyzed?
should you have catalyzed?
should he have catalyzed?
should we have catalyzed?
should you have catalyzed?
should they have catalyzed? 	should I have been catalyzing?
should you have been catalyzing?
should he have been catalyzing?
should we have been catalyzing?
should you have been catalyzing?
should they have been catalyzing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I catalyze?
shouldn't you catalyze?
shouldn't he catalyze?
shouldn't we catalyze?
shouldn't you catalyze?
shouldn't they catalyze? 	shouldn't I be catalyzing?
shouldn't you be catalyzing?
shouldn't he be catalyzing?
shouldn't we be catalyzing?
shouldn't you be catalyzing?
shouldn't they be catalyzing? 	shouldn't I have catalyzed?
shouldn't you have catalyzed?
shouldn't he have catalyzed?
shouldn't we have catalyzed?
shouldn't you have catalyzed?
shouldn't they have catalyzed? 	shouldn't I have been catalyzing?
shouldn't you have been catalyzing?
shouldn't he have been catalyzing?
shouldn't we have been catalyzing?
shouldn't you have been catalyzing?
shouldn't they have been catalyzing?