Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may decide decide you may decide decide she may decide decide we may decide decide you may decide decide they may decide decide
V-ing form
I may be decide deciding you may be decide deciding she may be decide deciding we may be decide deciding you may be decide deciding they may be decide deciding
Perfect
I may have decide decided you may have decide decided she may have decide decided we may have decide decided you may have decide decided they may have decide decided
V-ing perfect
I may have been decide deciding you may have been decide deciding she may have been decide deciding we may have been decide deciding you may have been decide deciding they may have been decide deciding
Negation
Simple form
I may not decide decide you may not decide decide she may not decide decide we may not decide decide you may not decide decide they may not decide decide
V-ing form
I may not be decide deciding you may not be decide deciding she may not be decide deciding we may not be decide deciding you may not be decide deciding they may not be decide deciding
Perfect
I may not have decide decided you may not have decide decided she may not have decide decided we may not have decide decided you may not have decide decided they may not have decide decided
V-ing perfect
I may not have been decide deciding you may not have been decide deciding she may not have been decide deciding we may not have been decide deciding you may not have been decide deciding they may not have been decide deciding
Interrogative form
Simple form
may I decide decide? may you decide decide? may she decide decide? may we decide decide? may you decide decide? may they decide decide?
V-ing form
may I be decide deciding? may you be decide deciding? may she be decide deciding? may we be decide deciding? may you be decide deciding? may they be decide deciding?
Perfect
may I have decide decided? may you have decide decided? may she have decide decided? may we have decide decided? may you have decide decided? may they have decide decided?
V-ing perfect
may I have been decide deciding? may you have been decide deciding? may she have been decide deciding? may we have been decide deciding? may you have been decide deciding? may they have been decide deciding?
Interro-negative form
Simple form
may I not decide decide? may you not decide decide? may she not decide decide? may we not decide decide? may you not decide decide? may they not decide decide?
V-ing form
may I not be decide deciding? may you not be decide deciding? may she not be decide deciding? may we not be decide deciding? may you not be decide deciding? may they not be decide deciding?
Perfect
may I not have decide decided? may you not have decide decided? may she not have decide decided? may we not have decide decided? may you not have decide decided? may they not have decide decided?
V-ing perfect
may I not have been decide deciding? may you not have been decide deciding? may she not have been decide deciding? may we not have been decide deciding? may you not have been decide deciding? may they not have been decide deciding?