English verb conjugation
MAY HOWL

Regular verb: howl - howled - howled

Affirmation

Simple form	V-ing form
I may howl you may howl she may howl we may howl you may howl they may howl	I may be howling you may be howling she 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 she 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 she 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 may not howl you may not howl she may not howl we may not howl you may not howl they may not howl	I may not be howling you may not be howling she may not be howling we may not be howling you may not be howling they may not be howling
Perfect	V-ing perfect
I may not have howled you may not have howled she may not have howled we may not have howled you may not have howled they may not have howled	I may not have been howling you may not have been howling she may not have been howling we may not have been howling you may not have been howling they may not have been howling

Interrogative form

Simple form	V-ing form
may I howl? may you howl? may she howl? may we howl? may you howl? may they howl?	may I be howling? may you be howling? may she 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 she 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 she 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
may I not howl? may you not howl? may she not howl? may we not howl? may you not howl? may they not howl?	may I not be howling? may you not be howling? may she not be howling? may we not be howling? may you not be howling? may they not be howling?
Perfect	V-ing perfect
may I not have howled? may you not have howled? may she not have howled? may we not have howled? may you not have howled? may they not have howled?	may I not have been howling? may you not have been howling? may she not have been howling? may we not have been howling? may you not have been howling? may they not have been howling?