Txawm li cas los xij, tsis yog ib txwm luam yog zoo li qub, thiab ntawm qhov tsis tooj - qee zaum lawv saib zoo dua li cov neeg ua neej nyob. Nyob rau hauv txhua rooj plaub, tam sim no koj tuaj yeem pom tus ntaus-saib ntawm qhov phem tshaj plaws thiab cov ntawv zoo tshaj plaws ntawm cov neeg ua koob tsheej.
Cov ntawv luam tsis zoo tshaj plaws ntawm cov neeg muaj koob npe:
Cov ntawv luam zoo tshaj plaws ntawm cov neeg muaj koob npe: