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:
| Consonant final stem | Example: k'ats- ("man") | Vowel final stem (truncating) | Example: mama- ("father") | Vowel final stem (non-truncating) | Example: Sakartvelo- ("Georgia") |
| --- | --- | --- | --- | --- | --- |
| -i | k'ats-i | -Ø | mama | -Ø | Sakartvelo |
| -ma | k'ats-ma | -m | mama-m | -m | Sakartvelo-m |
| -s | k'ats-s | -s | mama-s | -s | Sakartvelo-s |
| -is | k'ats-is | -is * | mam-is | -s | Sakartvelo-s |
| -it | k'ats-it | -it * | mam-it | -ti | Sakartvelo-ti |
| -ad | k'ats-ad | -d | mama-d | -d | Sakartvelo-d |
| -o | k'ats-o! | -Ø | mama! | -Ø | Sakartvelo! |
Question:
What is the truncating vowel final stem that has an example of mama-s?
Answer:
-s