English verb conjugation
MAY ZIPPER

Regular verb: zipper - zippered - zippered

Affirmation

Simple form	V-ing form
I may zipper you may zipper he may zipper we may zipper you may zipper they may zipper	I may be zippering you may be zippering he may be zippering we may be zippering you may be zippering they may be zippering
Perfect	V-ing perfect
I may have zippered you may have zippered he may have zippered we may have zippered you may have zippered they may have zippered	I may have been zippering you may have been zippering he may have been zippering we may have been zippering you may have been zippering they may have been zippering

Negation

Simple form	V-ing form
I may not zipper you may not zipper he may not zipper we may not zipper you may not zipper they may not zipper	I may not be zippering you may not be zippering he may not be zippering we may not be zippering you may not be zippering they may not be zippering
Perfect	V-ing perfect
I may not have zippered you may not have zippered he may not have zippered we may not have zippered you may not have zippered they may not have zippered	I may not have been zippering you may not have been zippering he may not have been zippering we may not have been zippering you may not have been zippering they may not have been zippering

Interrogative form

Simple form	V-ing form
may I zipper? may you zipper? may he zipper? may we zipper? may you zipper? may they zipper?	may I be zippering? may you be zippering? may he be zippering? may we be zippering? may you be zippering? may they be zippering?
Perfect	V-ing perfect
may I have zippered? may you have zippered? may he have zippered? may we have zippered? may you have zippered? may they have zippered?	may I have been zippering? may you have been zippering? may he have been zippering? may we have been zippering? may you have been zippering? may they have been zippering?

Interro-negative form

Simple form	V-ing form
may I not zipper? may you not zipper? may he not zipper? may we not zipper? may you not zipper? may they not zipper?	may I not be zippering? may you not be zippering? may he not be zippering? may we not be zippering? may you not be zippering? may they not be zippering?
Perfect	V-ing perfect
may I not have zippered? may you not have zippered? may he not have zippered? may we not have zippered? may you not have zippered? may they not have zippered?	may I not have been zippering? may you not have been zippering? may he not have been zippering? may we not have been zippering? may you not have been zippering? may they not have been zippering?