Answer: 1. ste 2. o 3. syn 4. la 5. ex 6. sa 7. vo 8. tri 9. ma 10 in 11. flu 12. cem 13. de 14. vul 15 chi
Explanation: The mentioned syllables are the ones that have the primary stress in the words according to number. I just wrote them by syllable because I couldn´t find the way to circle, highlight or hold.