Mas siv rau hauv cov ntawv luam ntawv, pp ntawv, nplaum nplaum, cov ntawv sau cov duab, cov ntawv tso quav), pu suav cov ntaub ntawv, thiab lwm yam.
Tus qauv tuaj yeem txheeb thiab nrhiav cov ntawv luam tawm kom kho qhov kev txiav tawm ntawm cov kev txiav tawm ntawm cov kev txiav txim siab thiab kom pom cov nyhuv thiab kom pom kev txiav tawm ntawm cov khoom luam.