Isibuko sendlela eyodwa, esibuye sibizwe ngokuthi isibuko esinezinhlangothi ezimbili (noma ingilazi yezindlela ezimbili, isibuko esinesiliva esiyingxenye, kanye nesibuko esikhanyela kancane), yisibuko esibuyiselanayo esibonakalisa ingxenye futhi esisobala ngokwengxenye.Umbono wokuhamba ngendlela eyodwa ufinyelelwa uma uhlangothi lwesibuko lukhanya ngokugqamile kanti olunye uhlangothi lumnyama.Lokhu kuvumela ukubuka ohlangothini olumnyama kodwa hhayi okuphambene.