Here's a breakdown of the pronunciation:
* Kö: The "ö" sound is similar to the "e" in "her" or "fern".
* Sön: The "ö" is again pronounced like the "e" in "her" or "fern".
* nöm: The "ö" is once again pronounced like the "e" in "her" or "fern".
The emphasis is on the first syllable, "kö".
It's best to listen to a native speaker pronounce it for the most accurate pronunciation. You can find many audio resources online or use a language learning app.