Laydhka tamarta sare leh wuxuu ka iftiimaa dusha sare ee shaqada, si shaqadu u gaarto barta dhalaalka ama barta karkaraya, halka gaaska cadaadiska sare uu ka afuufo birta dhalaalaysa ama uumiga leh. Iyadoo dhaqdhaqaaqa booska qaraabada ah ee laydhka iyo shaqada, agabka ayaa ugu dambeyntii loo sameeyaa jeex, si loo gaaro ujeeddada jarista.
