English verb conjugation
MAY EXTINGUISH

Regular verb: extinguish - extinguished - extinguished

Affirmation

Simple form	V-ing form
I may extinguish you may extinguish he may extinguish we may extinguish you may extinguish they may extinguish	I may be extinguishing you may be extinguishing he may be extinguishing we may be extinguishing you may be extinguishing they may be extinguishing
Perfect	V-ing perfect
I may have extinguished you may have extinguished he may have extinguished we may have extinguished you may have extinguished they may have extinguished	I may have been extinguishing you may have been extinguishing he may have been extinguishing we may have been extinguishing you may have been extinguishing they may have been extinguishing

Negation

Simple form	V-ing form
I mayn't extinguish you mayn't extinguish he mayn't extinguish we mayn't extinguish you mayn't extinguish they mayn't extinguish	I mayn't be extinguishing you mayn't be extinguishing he mayn't be extinguishing we mayn't be extinguishing you mayn't be extinguishing they mayn't be extinguishing
Perfect	V-ing perfect
I mayn't have extinguished you mayn't have extinguished he mayn't have extinguished we mayn't have extinguished you mayn't have extinguished they mayn't have extinguished	I mayn't have been extinguishing you mayn't have been extinguishing he mayn't have been extinguishing we mayn't have been extinguishing you mayn't have been extinguishing they mayn't have been extinguishing

Interrogative form

Simple form	V-ing form
may I extinguish? may you extinguish? may he extinguish? may we extinguish? may you extinguish? may they extinguish?	may I be extinguishing? may you be extinguishing? may he be extinguishing? may we be extinguishing? may you be extinguishing? may they be extinguishing?
Perfect	V-ing perfect
may I have extinguished? may you have extinguished? may he have extinguished? may we have extinguished? may you have extinguished? may they have extinguished?	may I have been extinguishing? may you have been extinguishing? may he have been extinguishing? may we have been extinguishing? may you have been extinguishing? may they have been extinguishing?

Interro-negative form

Simple form	V-ing form
mayn't I extinguish? mayn't you extinguish? mayn't he extinguish? mayn't we extinguish? mayn't you extinguish? mayn't they extinguish?	mayn't I be extinguishing? mayn't you be extinguishing? mayn't he be extinguishing? mayn't we be extinguishing? mayn't you be extinguishing? mayn't they be extinguishing?
Perfect	V-ing perfect
mayn't I have extinguished? mayn't you have extinguished? mayn't he have extinguished? mayn't we have extinguished? mayn't you have extinguished? mayn't they have extinguished?	mayn't I have been extinguishing? mayn't you have been extinguishing? mayn't he have been extinguishing? mayn't we have been extinguishing? mayn't you have been extinguishing? mayn't they have been extinguishing?