<prompt> Translate the following text to EnglishIkiwa 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.  <response>: If 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. 