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