I may creep you may creep he may creep we may creep you may creep they may creep
V-ing form
I may be creeping you may be creeping he may be creeping we may be creeping you may be creeping they may be creeping
Perfect
I may have crept you may have crept he may have crept we may have crept you may have crept they may have crept
V-ing perfect
I may have been creeping you may have been creeping he may have been creeping we may have been creeping you may have been creeping they may have been creeping
Negation
Simple form
I may not creep you may not creep he may not creep we may not creep you may not creep they may not creep
V-ing form
I may not be creeping you may not be creeping he may not be creeping we may not be creeping you may not be creeping they may not be creeping
Perfect
I may not have crept you may not have crept he may not have crept we may not have crept you may not have crept they may not have crept
V-ing perfect
I may not have been creeping you may not have been creeping he may not have been creeping we may not have been creeping you may not have been creeping they may not have been creeping
Interrogative form
Simple form
may I creep? may you creep? may he creep? may we creep? may you creep? may they creep?
V-ing form
may I be creeping? may you be creeping? may he be creeping? may we be creeping? may you be creeping? may they be creeping?
Perfect
may I have crept? may you have crept? may he have crept? may we have crept? may you have crept? may they have crept?
V-ing perfect
may I have been creeping? may you have been creeping? may he have been creeping? may we have been creeping? may you have been creeping? may they have been creeping?
Interro-negative form
Simple form
may I not creep? may you not creep? may he not creep? may we not creep? may you not creep? may they not creep?
V-ing form
may I not be creeping? may you not be creeping? may he not be creeping? may we not be creeping? may you not be creeping? may they not be creeping?
Perfect
may I not have crept? may you not have crept? may he not have crept? may we not have crept? may you not have crept? may they not have crept?
V-ing perfect
may I not have been creeping? may you not have been creeping? may he not have been creeping? may we not have been creeping? may you not have been creeping? may they not have been creeping?