may supplement
Regular verb: supplement - supplemented- supplemented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may supplement
you may supplement
he may supplement
we may supplement
you may supplement
they may supplement 	I may be supplementing
you may be supplementing
he may be supplementing
we may be supplementing
you may be supplementing
they may be supplementing	I may have supplemented
you may have supplemented
he may have supplemented
we may have supplemented
you may have supplemented
they may have supplemented	I may have been supplementing
you may have been supplementing
he may have been supplementing
we may have been supplementing
you may have been supplementing
they may have been supplementing	

Negation 	
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I mayn't supplement
you mayn't supplement
he mayn't supplement
we mayn't supplement
you mayn't supplement
they mayn't supplement 	I mayn't be supplementing
you mayn't be supplementing
he mayn't be supplementing
we mayn't be supplementing
you mayn't be supplementing
they mayn't be supplementing	I mayn't have supplemented
you mayn't have supplemented
he mayn't have supplemented
we mayn't have supplemented
you mayn't have supplemented
they mayn't have supplemented	I mayn't have been supplementing
you mayn't have been supplementing
he mayn't have been supplementing
we mayn't have been supplementing
you mayn't have been supplementing
they mayn't have been supplementing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I supplement?
may you supplement?
may he supplement?
may we supplement?
may you supplement?
may they supplement? 	may I be supplementing?
may you be supplementing?
may he be supplementing?
may we be supplementing?
may you be supplementing?
may they be supplementing? 	may I have supplemented?
may you have supplemented?
may he have supplemented?
may we have supplemented?
may you have supplemented?
may they have supplemented? 	may I have been supplementing?
may you have been supplementing?
may he have been supplementing?
may we have been supplementing?
may you have been supplementing?
may they have been supplementing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I supplement?
mayn't you supplement?
mayn't he supplement?
mayn't we supplement?
mayn't you supplement?
mayn't they supplement? 	mayn't I be supplementing?
mayn't you be supplementing?
mayn't he be supplementing?
mayn't we be supplementing?
mayn't you be supplementing?
mayn't they be supplementing? 	mayn't I have supplemented?
mayn't you have supplemented?
mayn't he have supplemented?
mayn't we have supplemented?
mayn't you have supplemented?
mayn't they have supplemented? 	mayn't I have been supplementing?
mayn't you have been supplementing?
mayn't he have been supplementing?
mayn't we have been supplementing?
mayn't you have been supplementing?
mayn't they have been supplementing?