<prompt> Translate the following text to Swahili23 Competitors understand clearly that 15-ounce pieces of saturation mail can be carried privately for less than Standard-A rates, while 4-ounce pieces cannot.  <response>: Wachezaji wa barua za kawaida wanaelewa wazi kwamba vipande vya saturation vya 15 ounce vinaweza kusafirishwa kwa kibinafsi kwa kiwango cha chini cha kiwango cha A, wakati vipande vya 4 ounce haviwezi. 