Kev faib cov thawv ntim khoom

1. Phau ntawv thiab cov ntawv xov xwm cia lub thawv

2. Cov ris tsho hauv qab lossis lub thawv ntim khoom kom zoo nkauj

3. Hierarchical cia thawv rau cov khoom siv me me

4. Chaw ua hauj lwm sau lub rooj / rooj cia lub thawv

5. Lub thawv ntim quav

6. Feem ntau siv disc cia thawv

7. Muaj yeeb yuj thom khwm cia lub thawv

8. Balcony clothespin cia lub thawv

9. Cov khaub ncaws cia lub thawv yuav tsum tau ntxuav