Ikhomu liyinhloko yezinkambu; Isimo sibonakalisa ngokulinganiselwa kwezwi "7", okokuqala, isiqobo siyakhomba ngokuphansi ngokugcwele (noma kancane kancane), futhi isiqobo esinye siyaphenduka ngokuhlanganyela phansi ngezinye izikhala ngokwezinye isikhathi ukuze sikhombise indlu esikhombisa.