<prompt> Translate the following text to SwahiliThe basic mail consists of all other mail and therefore includes flat-size pieces as well as letter-size pieces, and heavy-weight pieces as well as light-weight pieces.  <response>: Barua ya msingi inajumuisha barua nyingine zote na kwa hivyo inajumuisha vipande vya ukubwa wa gorofa na vipande vya ukubwa wa barua, na vipande vya uzito mzito na vipande vya uzito mwepesi. 