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 mayn't catalyze
you mayn't catalyze
he mayn't catalyze
we mayn't catalyze
you mayn't catalyze
they mayn't catalyze 	I mayn't be catalyzing
you mayn't be catalyzing
he mayn't be catalyzing
we mayn't be catalyzing
you mayn't be catalyzing
they mayn't be catalyzing	I mayn't have catalyzed
you mayn't have catalyzed
he mayn't have catalyzed
we mayn't have catalyzed
you mayn't have catalyzed
they mayn't have catalyzed	I mayn't have been catalyzing
you mayn't have been catalyzing
he mayn't have been catalyzing
we mayn't have been catalyzing
you mayn't have been catalyzing
they mayn't 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 	
mayn't I catalyze?
mayn't you catalyze?
mayn't he catalyze?
mayn't we catalyze?
mayn't you catalyze?
mayn't they catalyze? 	mayn't I be catalyzing?
mayn't you be catalyzing?
mayn't he be catalyzing?
mayn't we be catalyzing?
mayn't you be catalyzing?
mayn't they be catalyzing? 	mayn't I have catalyzed?
mayn't you have catalyzed?
mayn't he have catalyzed?
mayn't we have catalyzed?
mayn't you have catalyzed?
mayn't they have catalyzed? 	mayn't I have been catalyzing?
mayn't you have been catalyzing?
mayn't he have been catalyzing?
mayn't we have been catalyzing?
mayn't you have been catalyzing?
mayn't they have been catalyzing?