English verb conjugation
SHOULD CATALYSE

Regular verb: catalyse - catalysed - catalysed

Affirmation

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

Negation

Simple form	V-ing form
I should not catalyse you should not catalyse she should not catalyse we should not catalyse you should not catalyse they should not catalyse	I should not be catalysing you should not be catalysing she should not be catalysing we should not be catalysing you should not be catalysing they should not be catalysing
Perfect	V-ing perfect
I should not have catalysed you should not have catalysed she should not have catalysed we should not have catalysed you should not have catalysed they should not have catalysed	I should not have been catalysing you should not have been catalysing she should not have been catalysing we should not have been catalysing you should not have been catalysing they should not have been catalysing

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
should I not catalyse? should you not catalyse? should she not catalyse? should we not catalyse? should you not catalyse? should they not catalyse?	should I not be catalysing? should you not be catalysing? should she not be catalysing? should we not be catalysing? should you not be catalysing? should they not be catalysing?
Perfect	V-ing perfect
should I not have catalysed? should you not have catalysed? should she not have catalysed? should we not have catalysed? should you not have catalysed? should they not have catalysed?	should I not have been catalysing? should you not have been catalysing? should she not have been catalysing? should we not have been catalysing? should you not have been catalysing? should they not have been catalysing?