<prompt> Pedzisa mutsara unotevera: Halsall akamiririra Great Britain kumaOlympics ezhizha ra2008 mumakwikwi emamita 100 ekubhururuka,  <response>: 50 m freestyle, 100 m freestyle, 4×100 m freestyle, 4×200 m freestyle uye 4×100 m medley 