Iibheringi eziziqengqelezi eziziqengqelezi zinemiqolo ephindwe kabini, umsesane wangaphandle unomdyarho ongqukuva omnye ekwabelwana ngawo, kwaye umsesane wangaphakathi uneendlela ezimbini zomdyarho ezithambekele kwi-engile enxulumene ne-axis yokuthwala.