Qalabka yareeya daloolada waxaa loo isticmaalaa isku xirka tuubooyinka godan, gaar ahaan kuwa yareeya tuubooyinka, halkaas oo bartamaha labada daraf ee tuubooyinka ay ku xiran yihiin isla xariiq toosan, taasoo u oggolaanaysa in cabbirka socodka la beddelo.













