1. Ngosipụta: arụnyere na OPB, red dot matrix panel panel, ọkwa ọkwa ụda olu, ọrụ nkwurịta okwu bọtịnụ.2. Enweghị ngosi: arụnyere na OPB, na-ejikọta ọkwa ụda olu na ọrụ nkwurịta okwu bọtịnụ.