Umdwebo wengqamuzana elivamile lenswelandeni.
INswelandeni
yisiphili esinengqamuzana elilodwa nesiswele
indeni
kanye nezinye izithokazane zolwelwesi. Esimisweni sombuso ohlukene kabili ngokwencazelo ka- Edouard Chatton, izinswelandeni zazijinjwa ngaphakathi kombuso owodwa. Kodwana esimisweni
sesidlangala
esihlukene kathathu, esisekwe esihlaziyweni semizwayi, izinswelandeni zihlukaniswe zaba izidlangala ezimbili:
Izinungwana
kanye
nezingunazana
. Iziphili ezinendeni zibekwa esidlangaleni sesithathu,
iMvelendeni
. Izinswelandeni zavela kuqala kunezimvelendeni.