Dith-sahn-tes Dwin-wen Hap-us
Here's a breakdown:
* Dydd: Pronounced "Dith"
* Santes: Pronounced "Sahn-tes"
* Dwynwen: Pronounced "Dwin-wen"
* Hapus: Pronounced "Hap-us"
It's important to note that the stress falls on the first syllable of each word.
This phrase translates to "Happy St. Dwynwen's Day" in Welsh, and it's celebrated on January 25th, the Welsh equivalent of Valentine's Day.