English verb conjugation
MAY BIRL

Regular verb: birl - birled - birled

Affirmation

Simple form	V-ing form
I may birl you may birl she may birl we may birl you may birl they may birl	I may be birling you may be birling she may be birling we may be birling you may be birling they may be birling
Perfect	V-ing perfect
I may have birled you may have birled she may have birled we may have birled you may have birled they may have birled	I may have been birling you may have been birling she may have been birling we may have been birling you may have been birling they may have been birling

Negation

Simple form	V-ing form
I may not birl you may not birl she may not birl we may not birl you may not birl they may not birl	I may not be birling you may not be birling she may not be birling we may not be birling you may not be birling they may not be birling
Perfect	V-ing perfect
I may not have birled you may not have birled she may not have birled we may not have birled you may not have birled they may not have birled	I may not have been birling you may not have been birling she may not have been birling we may not have been birling you may not have been birling they may not have been birling

Interrogative form

Simple form	V-ing form
may I birl? may you birl? may she birl? may we birl? may you birl? may they birl?	may I be birling? may you be birling? may she be birling? may we be birling? may you be birling? may they be birling?
Perfect	V-ing perfect
may I have birled? may you have birled? may she have birled? may we have birled? may you have birled? may they have birled?	may I have been birling? may you have been birling? may she have been birling? may we have been birling? may you have been birling? may they have been birling?

Interro-negative form

Simple form	V-ing form
may I not birl? may you not birl? may she not birl? may we not birl? may you not birl? may they not birl?	may I not be birling? may you not be birling? may she not be birling? may we not be birling? may you not be birling? may they not be birling?
Perfect	V-ing perfect
may I not have birled? may you not have birled? may she not have birled? may we not have birled? may you not have birled? may they not have birled?	may I not have been birling? may you not have been birling? may she not have been birling? may we not have been birling? may you not have been birling? may they not have been birling?