RAY-sih-koh
The emphasis is on the first syllable, "RAY." The "c" in the second syllable is silent, and the "o" at the end has a short "o" sound like in "cot."
RAY-sih-koh
The emphasis is on the first syllable, "RAY." The "c" in the second syllable is silent, and the "o" at the end has a short "o" sound like in "cot."