English verb conjugation
MAY HOWL

Regular verb: howl - howled - howled

Affirmation

Simple form	V-ing form
I may howl you may howl he may howl we may howl you may howl they may howl	I may be howling you may be howling he may be howling we may be howling you may be howling they may be howling
Perfect	V-ing perfect
I may have howled you may have howled he may have howled we may have howled you may have howled they may have howled	I may have been howling you may have been howling he may have been howling we may have been howling you may have been howling they may have been howling

Negation

Simple form	V-ing form
I mayn't howl you mayn't howl he mayn't howl we mayn't howl you mayn't howl they mayn't howl	I mayn't be howling you mayn't be howling he mayn't be howling we mayn't be howling you mayn't be howling they mayn't be howling
Perfect	V-ing perfect
I mayn't have howled you mayn't have howled he mayn't have howled we mayn't have howled you mayn't have howled they mayn't have howled	I mayn't have been howling you mayn't have been howling he mayn't have been howling we mayn't have been howling you mayn't have been howling they mayn't have been howling

Interrogative form

Simple form	V-ing form
may I howl? may you howl? may he howl? may we howl? may you howl? may they howl?	may I be howling? may you be howling? may he be howling? may we be howling? may you be howling? may they be howling?
Perfect	V-ing perfect
may I have howled? may you have howled? may he have howled? may we have howled? may you have howled? may they have howled?	may I have been howling? may you have been howling? may he have been howling? may we have been howling? may you have been howling? may they have been howling?

Interro-negative form

Simple form	V-ing form
mayn't I howl? mayn't you howl? mayn't he howl? mayn't we howl? mayn't you howl? mayn't they howl?	mayn't I be howling? mayn't you be howling? mayn't he be howling? mayn't we be howling? mayn't you be howling? mayn't they be howling?
Perfect	V-ing perfect
mayn't I have howled? mayn't you have howled? mayn't he have howled? mayn't we have howled? mayn't you have howled? mayn't they have howled?	mayn't I have been howling? mayn't you have been howling? mayn't he have been howling? mayn't we have been howling? mayn't you have been howling? mayn't they have been howling?