ꯑꯣꯛꯁꯤꯖꯦꯟ ꯑꯦꯁꯤꯗꯀꯤ ꯄ꯭ꯔꯗꯛꯇ ꯑꯣꯚꯔꯚꯤꯌꯨ꯫
ꯏꯊꯥꯅꯦꯗꯥꯏꯑꯣꯏꯛ ꯑꯦꯁꯤꯗ ꯍꯥꯌꯅꯥ ꯈꯉꯅꯕꯥ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯑꯁꯤ ꯃꯣꯂꯤꯛꯌꯨꯂꯔ ꯐꯣꯔꯃꯨꯂꯥ (COOH) 2 ⋅2H2O ꯂꯩꯕꯥ ꯈ꯭ꯕꯥꯏꯗꯒꯤ ꯂꯥꯏꯕꯥ ꯗꯥꯏꯀꯥꯔꯕꯣꯛꯁꯥꯏꯂꯤꯛ ꯑꯦꯁꯤꯗꯅꯤ꯫
ꯃꯁꯤ ꯃꯆꯨ ꯂꯩꯇꯕꯥ ꯀꯂꯃꯒꯤ ꯀ꯭ꯔꯤꯁ꯭ꯇꯦꯜ ꯑꯣꯏꯅꯥ ꯎꯕꯥ ꯐꯪꯏ ꯑꯃꯁꯨꯡ ꯃꯁꯤ ꯍꯔꯕꯦꯁꯤꯌꯁ ꯄꯥꯝꯕꯤꯁꯤꯡꯗꯥ ꯀꯃꯟ ꯑꯣꯏꯕꯥ ꯀꯝꯄꯣꯅꯦꯟꯇ ꯑꯃꯅꯤ, ꯑꯌꯥꯝꯕꯅꯥ ꯄꯣꯇꯦꯁꯤꯌꯝ ꯅꯠꯠꯔꯒꯥ ꯀꯦꯂꯁꯤꯌꯝ ꯁꯣꯜꯇꯀꯤ ꯃꯑꯣꯡꯗꯥ ꯂꯩ, ꯑꯗꯨꯒꯥ ꯃꯁꯤ ꯆꯥꯏꯅꯥꯒꯤ ꯀ꯭ꯔꯦꯕꯦꯄꯜ ꯑꯃꯁꯨꯡ ꯕꯦꯅꯥꯒꯨꯝꯕꯥ ꯄꯥꯝꯕꯤꯁꯤꯡꯗꯥ ꯐ꯭ꯔꯤ ꯑꯦꯁꯤꯗ ꯑꯣꯏꯅꯥ ꯐꯪꯏ꯫ ꯃꯤꯑꯣꯏꯕꯒꯤ ꯌꯨꯔꯤꯅꯗꯁꯨ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗꯀꯤ ꯆꯥꯡ ꯌꯥꯝꯅꯥ ꯌꯥꯎꯏ, ꯑꯃꯁꯨꯡ ꯀꯦꯂꯁꯤꯌꯝ ꯑꯣꯛꯁꯦꯂꯦꯠ ꯑꯁꯤ ꯌꯨꯔꯤꯅꯔꯤ ꯇ꯭ꯔꯦꯛꯇꯀꯤ ꯁ꯭ꯇꯣꯅꯁꯤꯡꯒꯤ ꯃꯔꯨꯑꯣꯏꯕꯥ ꯀꯝꯄꯣꯅꯦꯟꯇꯅꯤ꯫ 100.1 °Cꯗꯥ ꯇꯔꯨ-ꯇꯅꯥꯅꯕꯥ ꯃꯇꯃꯗꯥ, ꯑꯣꯛꯁꯤꯖꯦꯟ ꯑꯦꯁꯤꯗ ꯀ꯭ꯔꯤꯁ꯭ꯇꯦꯂꯁꯤꯡꯅꯥ ꯃꯈꯣꯌꯒꯤ ꯀ꯭ꯔꯤꯁ꯭ꯇꯦꯂꯥꯏꯖꯦꯁꯅꯒꯤ ꯏꯁꯤꯡ ꯑꯗꯨ ꯃꯥꯡꯍꯟꯗꯨꯅꯥ ꯑꯦꯅꯍꯥꯏꯗ꯭ꯔꯣꯁ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯁꯦꯝꯃꯤ, ꯃꯁꯤꯒꯤ ꯃꯦꯜꯇꯤꯡ ꯄꯣꯏꯟꯇ ꯑꯁꯤ 189.5 °C ꯑꯣꯏ꯫ ꯑꯦꯅꯍꯥꯏꯗ꯭ꯔꯣꯁ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯑꯁꯤ ꯏꯁꯤꯡ ꯅꯠꯠꯔꯒꯥ ꯏꯊꯥꯅꯣꯂꯗꯥ ꯌꯥꯎꯏ ꯑꯗꯨꯕꯨ ꯏꯊꯥꯅꯣꯂꯗꯥ ꯌꯥꯎꯗꯦ꯫ ꯂꯦꯕꯣꯔꯦꯇꯔꯤꯗꯥ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯑꯁꯤ ꯊꯔꯃꯦꯜ ꯑꯣꯏꯅꯥ ꯁꯣꯀꯍꯟꯗꯨꯅꯥ ꯀꯥꯔꯕꯣꯟ ꯃꯣꯅꯣꯛꯁꯥꯏꯗ ꯒ꯭ꯌꯥꯁ ꯄꯨꯊꯣꯀꯄꯥ ꯌꯥꯏ꯫
ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯑꯁꯤ ꯄꯥꯛ-ꯆꯥꯎꯅꯥ ꯁꯤꯖꯤꯟꯅꯕꯥ ꯌꯥꯕꯥ ꯃꯔꯨꯑꯣꯏꯕꯥ ꯀꯦꯃꯤꯀꯦꯜ ꯔꯣ ꯃꯦꯇꯔꯤꯌꯦꯜ ꯑꯃꯅꯤ ꯑꯃꯁꯨꯡ ꯃꯁꯤ ꯂꯝ ꯀꯌꯥꯗꯥ ꯁꯤꯖꯤꯟꯅꯩ꯫ ꯐꯥꯔꯃꯥꯁ꯭ꯌꯨꯇꯤꯀꯦꯜ, ꯗꯥꯏ, ꯑꯃꯁꯨꯡ ꯀꯣꯇꯤꯡ ꯏꯟꯗꯁ꯭ꯠꯔꯤꯁꯤꯡ ꯆꯥꯎꯈꯠꯂꯀꯄꯥ ꯑꯃꯁꯨꯡ ꯏꯟꯇꯔꯅꯦꯁ꯭ꯅꯦꯜ ꯀꯩꯊꯦꯜ ꯍꯥꯡꯗꯣꯀꯄꯒꯥ ꯂꯣꯌꯅꯅꯥ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯄꯨꯊꯣꯀꯄꯒꯤ ꯃꯇꯥꯡꯗꯥ ꯊꯤꯖꯤꯅꯕꯥ ꯑꯃꯁꯨꯡ ꯆꯥꯎꯈꯠꯄꯥ ꯑꯁꯤ ꯌꯥꯝꯅꯥ ꯃꯊꯧ ꯇꯥꯏ꯫

ꯁꯥꯟꯗꯣꯡ ꯄꯨꯂꯤꯁꯤ ꯀꯦꯃꯤꯀꯦꯜ ꯀꯣꯡ, ꯂꯤꯃꯤꯇꯦꯗ – ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯄ꯭ꯔꯣꯐꯥꯏꯜ꯫
꯲꯰꯰꯶ꯀꯤ ꯑꯣꯛꯇꯣꯕꯔꯗꯥ ꯂꯤꯡꯈꯠꯈꯤꯕꯥ ꯑꯃꯁꯨꯡ ꯁꯥꯟꯗꯣꯡꯒꯤ ꯖꯤꯕꯣꯗꯥ ꯍꯦꯗꯛꯕꯥꯇꯔ ꯂꯩꯕꯥ ꯁꯥꯟꯗꯣꯡ ꯄꯨꯂꯤꯁꯤ ꯀꯦꯃꯤꯀꯦꯜ ꯀꯣ., ꯂꯤꯃꯤꯇꯦꯗ ꯑꯁꯤ ꯃꯥꯂꯦꯃꯒꯤ ꯑꯣꯏꯅꯥ ꯈꯣꯡꯖꯦꯜ ꯌꯥꯡꯅꯥ ꯆꯠꯂꯤꯕꯥ ꯑꯋꯥꯡꯕꯥ ꯊꯥꯛꯀꯤ ꯀꯦꯃꯤꯀꯦꯜ ꯔꯣ ꯃꯦꯇꯔꯤꯌꯦꯂꯁꯤꯡꯒꯤ ꯃꯀꯣꯛ ꯊꯣꯡꯕꯥ ꯄ꯭ꯔꯣꯐꯦꯁ꯭ꯅꯦꯜ ꯁꯞꯂꯥꯏꯌꯔ ꯑꯃꯅꯤ꯫ “ꯀ꯭ꯕꯥꯂꯤꯇꯤ ꯀꯦꯃꯤꯀꯦꯂꯁꯤꯡ ꯁꯦꯃꯒꯠꯄꯗꯥ ꯃꯤꯠꯌꯦꯡ ꯊꯝꯕꯥ” ꯍꯥꯌꯕꯥ ꯐꯤꯂꯣꯁꯣꯐꯤꯗꯥ ꯋꯥꯁꯛ ꯂꯧꯗꯨꯅꯥ, ꯀꯝꯄꯦꯅꯤ ꯑꯁꯤꯅꯥ ꯖꯤꯕꯣ ꯑꯅꯍꯥꯑꯣ ꯀꯦꯃꯤꯀꯦꯜ ꯀꯣ., ꯂꯤꯃꯤꯇꯦꯗ ꯑꯃꯁꯨꯡ ꯆꯥꯏꯅꯥ ꯆꯥꯡꯔꯨꯏ ꯀꯣ., ꯂꯤꯃꯤꯇꯦꯗ ꯌꯥꯑꯣꯅꯥ ꯑꯦꯐꯤꯂꯤꯌꯦꯠ ꯇꯧꯔꯕꯥ ꯑꯦꯟꯇꯤꯇꯤꯁꯤꯡꯒꯥ ꯂꯣꯌꯅꯅꯥ ꯑꯥꯔ.ꯑꯦꯟꯗ.ꯗꯤ., ꯄ꯭ꯔꯗꯛꯁꯟ, ꯃꯥꯔꯀꯦꯇꯤꯡ ꯑꯃꯁꯨꯡ ꯂꯣꯖꯤꯁ꯭ꯇꯤꯛꯁꯄꯨ ꯄꯨꯅꯁꯤꯟꯅꯗꯨꯅꯥ ꯑꯄꯨꯅꯕꯥ ꯏꯟꯇꯔꯞꯔꯥꯏꯖ ꯑꯃꯥ ꯑꯣꯏꯅꯥ ꯁꯦꯃꯒꯠꯂꯦ꯫
ꯑꯩꯈꯣꯌꯒꯤ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ (ꯁꯤ.ꯑꯦ.ꯑꯦꯁ. ꯅꯪ.: ꯑꯦꯅꯍꯥꯏꯗ꯭ꯔꯣꯁꯀꯤ ꯑꯣꯏꯅꯥ ꯱꯴꯴-꯶꯲-꯷, ꯗꯥꯏꯍꯥꯏꯗ꯭ꯔꯦꯇꯀꯤ ꯑꯣꯏꯅꯥ ꯶꯱꯵꯳-꯵꯶-꯶) ꯑꯁꯤ ꯃꯔꯨꯑꯣꯏꯕꯥ ꯄꯣꯠꯊꯣꯛ ꯑꯃꯅꯤ, ꯃꯁꯤ ꯏꯟꯇꯔꯅꯦꯁ꯭ꯅꯦꯜ ꯀ꯭ꯕꯥꯂꯤꯇꯤ ꯁ꯭ꯇꯦꯟꯗꯔꯗꯁꯤꯡꯒꯥ ꯆꯨꯅꯕꯥ ꯃꯑꯣꯡꯗꯥ ꯁꯥꯕꯅꯤ꯫ ꯏꯟꯗꯁ꯭ꯠꯔꯤꯌꯦꯜ ꯒ꯭ꯔꯦꯗ (ꯄ꯭ꯌꯨꯔꯤꯇꯤ ≥꯹꯶%) ꯑꯃꯁꯨꯡ ꯔꯤꯐꯥꯏꯟꯗ ꯒ꯭ꯔꯦꯗ (ꯄ꯭ꯌꯨꯔꯤꯇꯤ ≥꯹꯹.꯶%) ꯑꯅꯤꯃꯛꯇꯥ ꯐꯪꯂꯤꯕꯥ ꯑꯩꯈꯣꯌꯒꯤ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯑꯁꯤ ꯃꯣꯂꯤꯛꯌꯨꯂꯔ ꯐꯣꯔꯃꯨꯂꯥ C2H2O4·2H2O ꯑꯃꯁꯨꯡ ꯃꯣꯂꯤꯛꯌꯨꯂꯔ ꯑꯣꯏꯕꯥ ꯑꯔꯨꯝꯕꯥ ꯱꯲꯶.꯰꯷ ꯂꯩꯕꯥ ꯃꯆꯨ ꯂꯩꯇꯕꯥ ꯇ꯭ꯔꯥꯟꯁꯄꯔꯦꯟꯇ ꯀ꯭ꯔꯤꯁ꯭ꯇꯦꯜ (ꯃꯍꯧꯁꯥꯅꯥ ꯗꯥꯏꯍꯥꯏꯗ꯭ꯔꯦꯠ) ꯑꯣꯏꯅꯥ ꯂꯩ꯫ ꯃꯁꯤꯅꯥ ꯏꯁꯤꯡ ꯑꯃꯁꯨꯡ ꯏꯊꯥꯅꯣꯂꯗꯥ ꯌꯥꯝꯅꯥ ꯁꯣꯜꯌꯨꯕꯤꯂꯤꯇꯤ, ꯑꯀꯅꯕꯥ ꯍꯟꯊꯍꯅꯕꯒꯤ ꯃꯒꯨꯟ ꯑꯃꯁꯨꯡ ꯑꯦꯁꯤꯗꯤꯇꯤ ꯌꯥꯝꯅꯥ ꯌꯥꯑꯣꯏ-ꯃꯁꯤꯅꯥ ꯃꯁꯤꯕꯨ ꯈ꯭ꯕꯥꯏꯗꯒꯤ ꯃꯄꯥꯉ꯭ꯒꯜ ꯀꯅꯕꯥ ꯑꯣꯔꯒꯥꯅꯤꯛ ꯗꯥꯏꯀꯥꯔꯕꯣꯛꯁꯥꯏꯂꯤꯛ ꯑꯦꯁꯤꯗꯁꯤꯡꯒꯤ ꯃꯅꯨꯡꯗꯥ ꯑꯃꯥ ꯑꯣꯏꯍꯜꯂꯤ꯫
ꯑꯥꯏ.ꯑꯦꯁ.ꯑꯣ.꯹꯰꯰꯱:꯲꯰꯱꯵ꯒꯤ ꯁ꯭ꯇꯦꯟꯗꯔꯗꯁꯤꯡꯒꯥ ꯆꯨꯅꯕꯥ ꯃꯑꯣꯡꯗꯥ ꯀ꯭ꯕꯥꯂꯤꯇꯤ ꯀꯟꯠꯔꯣꯜ ꯇꯧꯕꯥ ꯑꯃꯁꯨꯡ ꯖꯔꯃꯅꯤ ꯕꯤ.ꯚꯤ.ꯒꯨꯝꯕꯥ ꯑꯣꯊꯣꯔꯤꯇꯤ ꯕꯣꯗꯤꯁꯤꯡꯅꯥ ꯁꯔꯇꯤꯐꯥꯏꯗ ꯇꯧꯔꯕꯥ ꯑꯩꯈꯣꯌꯒꯤ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯑꯁꯤ ꯏꯟꯗꯁ꯭ꯠꯔꯤ ꯀꯌꯥꯗꯥ ꯄꯥꯛ ꯁꯟꯅꯥ ​​ꯁꯤꯖꯤꯟꯅꯩ:
ꯃꯦꯇꯥꯂꯔꯖꯤ: ꯑꯥꯏꯔꯟ, ꯀꯄꯥꯔ ꯑꯃꯁꯨꯡ ꯑꯇꯩ ꯙꯥꯇꯨꯁꯤꯡꯒꯤꯗꯃꯛꯇꯥ ꯏꯐꯦꯛꯇꯤꯕ ꯑꯣꯏꯕꯥ ꯃꯩꯁꯥ ꯂꯧꯊꯣꯀꯄꯥ, ꯙꯥꯇꯨ ꯁꯦꯡꯗꯣꯀꯄꯥ ꯑꯃꯁꯨꯡ ꯀꯝꯞꯂꯦꯛꯁꯦꯁꯟ ꯑꯦꯖꯦꯟꯇ꯫
ꯀꯟꯁꯠꯔꯛꯁꯟ: ꯀꯪꯛꯔꯤꯠ ꯑꯦꯗꯃꯤꯛꯁꯆꯔ ꯑꯃꯁꯨꯡ ꯕꯤꯜꯗꯤꯡ ꯃꯦꯇꯔꯤꯑꯦꯜ ꯄ꯭ꯔꯣꯁꯦꯁꯤꯡꯒꯤꯗꯃꯛꯇꯥ ꯃꯔꯨꯑꯣꯏꯕꯥ ꯔꯣ ꯃꯦꯇꯔꯤꯌꯦꯜ꯫
ꯂꯦꯗꯔ ꯏꯟꯗꯁ꯭ꯠꯔꯤ: ꯂꯦꯗꯔ ꯕ꯭ꯂꯤꯆꯤꯡ, ꯗꯤꯒ꯭ꯔꯤꯁꯤꯡ ꯑꯃꯁꯨꯡ ꯇꯦꯅꯤꯡ ꯇꯧꯕꯗꯥ ꯁꯤꯖꯤꯟꯅꯩ꯫
ꯏꯁꯤꯡ ꯁꯦꯡꯗꯣꯀꯄꯥ: ꯏꯁꯤꯡꯒꯤ ꯀ꯭ꯕꯥꯂꯤꯇꯤ ꯐꯒꯠꯍꯅꯕꯥ ꯑꯃꯁꯨꯡ ꯁ꯭ꯀꯦꯜ ꯂꯧꯊꯣꯀꯄꯒꯤꯗꯃꯛ ꯆꯦꯂꯦꯇꯤꯡ ꯑꯦꯖꯦꯟꯇ꯫
ꯇꯦꯛꯁꯇꯥꯏꯜ & ꯄ꯭ꯔꯤꯟꯇꯤꯡ: ꯕ꯭ꯂꯤꯆꯤꯡ ꯑꯦꯖꯦꯟꯇ ꯑꯃꯁꯨꯡ ꯗꯥꯏꯌꯤꯡ ꯑꯣꯛꯁꯤꯖꯦꯟ꯫
ꯐꯥꯔꯃꯥꯁ꯭ꯌꯨꯇꯤꯀꯦꯜ & ꯐꯨꯗ ꯏꯟꯗꯁ꯭ꯠꯔꯤꯁꯤꯡ: ꯐꯥꯔꯃꯥꯁ꯭ꯌꯨꯇꯤꯀꯦꯜ ꯏꯟꯇꯔꯃꯦꯗꯤꯑꯦꯠꯁꯤꯡ ꯑꯃꯁꯨꯡ ꯐꯨꯗ ꯑꯦꯗꯤꯇꯤꯕ ꯄ꯭ꯔꯣꯁꯦꯁꯤꯡꯗꯥ ꯁꯤꯟꯊꯦꯁꯤꯁ ꯇꯧꯕꯗꯥ ꯁꯤꯖꯤꯟꯅꯩ꯫
ꯀꯤꯡꯗꯥꯑꯣ, ꯇꯤꯌꯥꯅꯖꯤꯟ, ꯁꯉ꯭ꯒꯣꯝ ꯄꯣꯔꯇꯁꯤꯡ ꯑꯃꯁꯨꯡ ꯖꯤꯕꯣ ꯐ꯭ꯔꯤ ꯇ꯭ꯔꯦꯗ ꯖꯣꯅꯗꯥ ꯃꯅꯤꯡꯇꯝꯕꯥ ꯋꯦꯌꯔꯍꯥꯎꯁꯁꯤꯡꯒꯥ ꯂꯣꯌꯅꯅꯥ ꯑꯩꯈꯣꯌꯅꯥ ꯃꯥꯂꯦꯃꯒꯤ ꯀ꯭ꯂꯥꯏꯟꯇꯁꯤꯡꯗꯥ ꯏꯐꯤꯁꯤꯌꯦꯟꯇ ꯗꯦꯂꯤꯕꯔꯤ ꯁꯣꯌꯗꯅꯥ ꯐꯪꯍꯜꯂꯤ꯫ ꯑꯩꯈꯣꯌꯒꯤ ꯄꯣꯠꯊꯣꯀꯁꯤꯡ ꯑꯁꯤ ꯔꯤꯆ, ꯑꯦꯐ.ꯑꯦ.ꯑꯦꯝ.ꯑꯥꯏ.-ꯀ꯭ꯌꯨ.ꯑꯦꯁ. ꯑꯃꯁꯨꯡ ꯑꯦꯁ.ꯖꯤ.ꯑꯦꯁ. ꯑꯩꯈꯣꯌꯅꯥ ꯄꯦꯠꯔꯣꯆꯥꯏꯅꯥ, ꯁꯤ.ꯑꯦꯟ.ꯑꯣ.ꯑꯣ.ꯁꯤ., ꯁꯦꯟꯇ-ꯒꯣꯕꯦꯟ ꯑꯃꯁꯨꯡ ꯂꯥꯐꯥꯔꯖ ꯌꯥꯑꯣꯅꯥ ꯃꯃꯤꯡ ꯂꯩꯔꯕꯥ ꯏꯟꯇꯔꯞꯔꯥꯏꯖꯁꯤꯡꯒꯥ ꯃꯇꯝ ꯁꯥꯡꯅꯥ ꯇꯪꯗꯨ ꯂꯩꯇꯥꯕꯥ ꯀꯣꯑꯣꯄꯔꯦꯇꯤꯕ ꯃꯔꯤꯁꯤꯡ ꯁꯦꯃꯒꯠꯂꯦ꯫
ꯁꯥꯟꯗꯣꯡ ꯄꯨꯂꯤꯁꯤ ꯀꯦꯃꯤꯀꯦꯂꯗꯥ ꯑꯩꯈꯣꯌꯅꯥ ꯃꯥꯂꯦꯝ ꯁꯤꯅꯕꯥ ꯊꯨꯡꯅꯥ ꯇꯣꯉꯥꯟ ꯇꯣꯉꯥꯅꯕꯥ ꯏꯟꯗꯁ꯭ꯠꯔꯤꯒꯤ ꯃꯊꯧ ꯇꯥꯕꯁꯤꯡ ꯑꯗꯨ ꯐꯪꯍꯟꯅꯕꯥ ꯀꯁ꯭ꯇꯃꯁ ꯑꯣꯏꯕꯥ ꯑꯣꯛꯁꯥꯂꯤꯛ ꯑꯦꯁꯤꯗ ꯁꯣꯂꯨꯁꯅꯁꯤꯡ ꯄꯤꯗꯨꯅꯥ ꯀ꯭ꯕꯥꯂꯤꯇꯤ, ꯁꯦꯐꯇꯤ ꯑꯃꯁꯨꯡ ꯀꯁ꯭ꯇꯃꯔ-ꯁꯦꯟꯠꯔꯤꯛ ꯁꯔꯕꯤꯁꯇꯥ ꯃꯔꯨ ꯑꯣꯏꯕꯥ ꯄꯤꯔꯤ꯫