1. The set of leaders at the end with the province. "Oh A = {Boeing, Suphanburi, Prachin Buri, singburi,..., Lopburi)}.He 2. The set of the เมลบ. B = {- 1 - 2,,,} - 3...Oh 3. The set of consonants in English. C = {a, B, C,... You},,
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