Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Value | Khmer | Word form | UNGEGN | ALA-LC | Notes |
| --- | --- | --- | --- | --- | --- |
| 10 | ១០ | ទស | tôs | das | Sanskrit , Pali dasa |
| 12 | ១២ | ទ្វាទស | tvéatôs(â) | dvādas(a) | Sanskrit , Pali dvādasa |
| 13 or 30 | ១៣ or ៣០ | ត្រីទស | trei tôs | trǐ das | Sanskrit , Pali trayodasa |
| 28 | ២៨ | អស្តាពីស | ’asta pi sâ | qastā bǐ sa | Sanskrit (8, aṣṭá-) (20, vimsati) |
| 100 | ១០០ | សត | sâtâ | sata | Sanskrit sata |
Question:
what's the ungen for ត្រីទស?
Answer:
trei tôs