Ukuthumela izikhwama zephepha kubandakanya amanyathelo amaninzi okuqinisekisa inkqubo egudileyo kunye neyimpumelelo. Nantsi inkcazo ngokubanzi yamanyathelo abandakanyekayo ekuthumeleni ngaphandle iingxowa zephepha:
Umzi-mveliso wengxowa yephepha liziko lokuvelisa elijongene nemveliso kunye nokudibanisa iingxowa zephepha. Nantsi eminye imiba ephambili enxulumene nomzi-mveliso wengxowa yephepha eqhelekileyo:
Iingxowa zokuthenga ngephepha zibonelela ngeenzuzo ezininzi ngaphezu kwezinye iintlobo zeengxowa zokuthenga. Nazi ezinye iingenelo eziphambili: