Burburinta tamarta sare ee tamarta sare ee tamarta sare ee tamarta leh, si shaqada shaqadu ay u gaarto qodobka dhalaalaya ama qodobka karkaraya, halka gaaska cadaadiska sare uu ka baxo birta dhalaalaysa ama uumiga. Dhaqdhaqaaqa booska qaraabada ee dogor iyo shaashadda, maaddada ayaa ugu dambeyntii lagu sameeyay slit, si loo gaaro ujeedada goynta.