I may perdure you may perdure she may perdure we may perdure you may perdure they may perdure
V-ing form
I may be perduring you may be perduring she may be perduring we may be perduring you may be perduring they may be perduring
Perfect
I may have perdured you may have perdured she may have perdured we may have perdured you may have perdured they may have perdured
V-ing perfect
I may have been perduring you may have been perduring she may have been perduring we may have been perduring you may have been perduring they may have been perduring
Negation
Simple form
I may not perdure you may not perdure she may not perdure we may not perdure you may not perdure they may not perdure
V-ing form
I may not be perduring you may not be perduring she may not be perduring we may not be perduring you may not be perduring they may not be perduring
Perfect
I may not have perdured you may not have perdured she may not have perdured we may not have perdured you may not have perdured they may not have perdured
V-ing perfect
I may not have been perduring you may not have been perduring she may not have been perduring we may not have been perduring you may not have been perduring they may not have been perduring
Interrogative form
Simple form
may I perdure? may you perdure? may she perdure? may we perdure? may you perdure? may they perdure?
V-ing form
may I be perduring? may you be perduring? may she be perduring? may we be perduring? may you be perduring? may they be perduring?
Perfect
may I have perdured? may you have perdured? may she have perdured? may we have perdured? may you have perdured? may they have perdured?
V-ing perfect
may I have been perduring? may you have been perduring? may she have been perduring? may we have been perduring? may you have been perduring? may they have been perduring?
Interro-negative form
Simple form
may I not perdure? may you not perdure? may she not perdure? may we not perdure? may you not perdure? may they not perdure?
V-ing form
may I not be perduring? may you not be perduring? may she not be perduring? may we not be perduring? may you not be perduring? may they not be perduring?
Perfect
may I not have perdured? may you not have perdured? may she not have perdured? may we not have perdured? may you not have perdured? may they not have perdured?
V-ing perfect
may I not have been perduring? may you not have been perduring? may she not have been perduring? may we not have been perduring? may you not have been perduring? may they not have been perduring?