English verb conjugation
MAY AUTHENTICATE

Regular verb: authenticate - authenticated - authenticated

Affirmation

Simple form	V-ing form
I may authenticate you may authenticate she may authenticate we may authenticate you may authenticate they may authenticate	I may be authenticating you may be authenticating she may be authenticating we may be authenticating you may be authenticating they may be authenticating
Perfect	V-ing perfect
I may have authenticated you may have authenticated she may have authenticated we may have authenticated you may have authenticated they may have authenticated	I may have been authenticating you may have been authenticating she may have been authenticating we may have been authenticating you may have been authenticating they may have been authenticating

Negation

Simple form	V-ing form
I mayn't authenticate you mayn't authenticate she mayn't authenticate we mayn't authenticate you mayn't authenticate they mayn't authenticate	I mayn't be authenticating you mayn't be authenticating she mayn't be authenticating we mayn't be authenticating you mayn't be authenticating they mayn't be authenticating
Perfect	V-ing perfect
I mayn't have authenticated you mayn't have authenticated she mayn't have authenticated we mayn't have authenticated you mayn't have authenticated they mayn't have authenticated	I mayn't have been authenticating you mayn't have been authenticating she mayn't have been authenticating we mayn't have been authenticating you mayn't have been authenticating they mayn't have been authenticating

Interrogative form

Simple form	V-ing form
may I authenticate? may you authenticate? may she authenticate? may we authenticate? may you authenticate? may they authenticate?	may I be authenticating? may you be authenticating? may she be authenticating? may we be authenticating? may you be authenticating? may they be authenticating?
Perfect	V-ing perfect
may I have authenticated? may you have authenticated? may she have authenticated? may we have authenticated? may you have authenticated? may they have authenticated?	may I have been authenticating? may you have been authenticating? may she have been authenticating? may we have been authenticating? may you have been authenticating? may they have been authenticating?

Interro-negative form

Simple form	V-ing form
mayn't I authenticate? mayn't you authenticate? mayn't she authenticate? mayn't we authenticate? mayn't you authenticate? mayn't they authenticate?	mayn't I be authenticating? mayn't you be authenticating? mayn't she be authenticating? mayn't we be authenticating? mayn't you be authenticating? mayn't they be authenticating?
Perfect	V-ing perfect
mayn't I have authenticated? mayn't you have authenticated? mayn't she have authenticated? mayn't we have authenticated? mayn't you have authenticated? mayn't they have authenticated?	mayn't I have been authenticating? mayn't you have been authenticating? mayn't she have been authenticating? mayn't we have been authenticating? mayn't you have been authenticating? mayn't they have been authenticating?