English verb conjugation
MAY IMPUGN

Regular verb: impugn - impugned - impugned

Affirmation

Simple form	V-ing form
I may impugn you may impugn he may impugn we may impugn you may impugn they may impugn	I may be impugning you may be impugning he may be impugning we may be impugning you may be impugning they may be impugning
Perfect	V-ing perfect
I may have impugned you may have impugned he may have impugned we may have impugned you may have impugned they may have impugned	I may have been impugning you may have been impugning he may have been impugning we may have been impugning you may have been impugning they may have been impugning

Negation

Simple form	V-ing form
I mayn't impugn you mayn't impugn he mayn't impugn we mayn't impugn you mayn't impugn they mayn't impugn	I mayn't be impugning you mayn't be impugning he mayn't be impugning we mayn't be impugning you mayn't be impugning they mayn't be impugning
Perfect	V-ing perfect
I mayn't have impugned you mayn't have impugned he mayn't have impugned we mayn't have impugned you mayn't have impugned they mayn't have impugned	I mayn't have been impugning you mayn't have been impugning he mayn't have been impugning we mayn't have been impugning you mayn't have been impugning they mayn't have been impugning

Interrogative form

Simple form	V-ing form
may I impugn? may you impugn? may he impugn? may we impugn? may you impugn? may they impugn?	may I be impugning? may you be impugning? may he be impugning? may we be impugning? may you be impugning? may they be impugning?
Perfect	V-ing perfect
may I have impugned? may you have impugned? may he have impugned? may we have impugned? may you have impugned? may they have impugned?	may I have been impugning? may you have been impugning? may he have been impugning? may we have been impugning? may you have been impugning? may they have been impugning?

Interro-negative form

Simple form	V-ing form
mayn't I impugn? mayn't you impugn? mayn't he impugn? mayn't we impugn? mayn't you impugn? mayn't they impugn?	mayn't I be impugning? mayn't you be impugning? mayn't he be impugning? mayn't we be impugning? mayn't you be impugning? mayn't they be impugning?
Perfect	V-ing perfect
mayn't I have impugned? mayn't you have impugned? mayn't he have impugned? mayn't we have impugned? mayn't you have impugned? mayn't they have impugned?	mayn't I have been impugning? mayn't you have been impugning? mayn't he have been impugning? mayn't we have been impugning? mayn't you have been impugning? mayn't they have been impugning?