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