Ko nga tapanga waiariki tika he momo tapanga whai hua te utu i hangaia me te mahinga whakamaarama tika.I roto i tenei mahi, ka whakamahia he upoko taarua waiariki hei whakamahana i nga waahi motuhake o te pepa whakakikoruatia, te wera-whaariki (te wera ranei).