ℭ𝔥𝔯𝔦𝔰𝔱𝔞𝔩 𝔐𝔬𝔲𝔫𝔱𝔞𝔦𝔫 𝔚𝔞𝔯𝔫𝔦𝔫𝔤 — 𝔰𝔲𝔫𝔠𝔥𝔞𝔰𝔢𝔯 {𝔳𝔬𝔠𝔞𝔩 𝔠𝔬𝔳𝔢𝔯}