may catalyze
Regular verb: catalyze - catalyzed- catalyzed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may catalyze
you may catalyze
he may catalyze
we may catalyze
you may catalyze
they may catalyze 	I may be catalyzing
you may be catalyzing
he may be catalyzing
we may be catalyzing
you may be catalyzing
they may be catalyzing	I may have catalyzed
you may have catalyzed
he may have catalyzed
we may have catalyzed
you may have catalyzed
they may have catalyzed	I may have been catalyzing
you may have been catalyzing
he may have been catalyzing
we may have been catalyzing
you may have been catalyzing
they may have been catalyzing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not catalyze
you may not catalyze
he may not catalyze
we may not catalyze
you may not catalyze
they may not catalyze 	I may not be catalyzing
you may not be catalyzing
he may not be catalyzing
we may not be catalyzing
you may not be catalyzing
they may not be catalyzing	I may not have catalyzed
you may not have catalyzed
he may not have catalyzed
we may not have catalyzed
you may not have catalyzed
they may not have catalyzed	I may not have been catalyzing
you may not have been catalyzing
he may not have been catalyzing
we may not have been catalyzing
you may not have been catalyzing
they may not have been catalyzing	

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

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