Incazelo emfushane:

A. Cindezela kanye, izibani zangaphambili nangemuva zizokhanya zonke.Ngemuva kwamasekhondi angu-30, izibani zangaphambili nangemuva zizokhanya kancane ukuze zizwe ukukhanya okuphezulu.B. Cindezela kabili, amalambu angaphambili nangemuva azokhanyisa kabili futhi wonke akhanye.Emuva kwemizuzwana engu-30, amalambu angaphambili azocisha, namalambu angemuva azokhanya ukuze abonise ukukhanya okuphezulu.C. Cindezela kathathu, futhi amalambu angaphambili nangemuva azokhanyisa kathathu ukuze acime