??? ???? ??? ???. ????? ?? ?? ????? ??? ???? ???.??? ???? ???? ??? ?????: ????? ??? ??? ???? ??? ???? ????? ????, ????? ??? ?? ?? ??? ?????? ?????.?? ?? -> ???? -> ????(??, ???, ??, ????) -> ???? -> ???? -> ????? ??? ??? ? ?? ?????? ???? ???? ??? ?? ?? ??? ??? ???? ??? ??? ????, ?? ??? ?? ??? ? ?? ????.Whenever a consumer desires to alter their add