Cov hnab yas ntim khoom, cov hnab nqa khoom, lossis cov hnab ntim khoom noj khoom haus yog ib hom hnab yas siv los ua lub hnab ntim khoom .Lawv muaj zog thiab tuaj yeem luam ntau cov qauv nrog cov xim zoo nkauj thiab cov qauv ntshiab.Nws feem ntau yog siv hauv khw muag khoom, khw, khw, lwm.