<prompt> Translate the following text to SwahiliIf 4 months is added for pre-contract effort and 1-2 months is provided for start up and commissioning, the total project duration would be anywhere from about 21 months to 26 months.  <response>: Ikiwa miezi minne ya kazi ya kabla ya mkataba na miezi miwili ya kuanza na kuagiza, muda wa mradi utakuwa kati ya miezi 21 hadi 26. 