30 ืืืืืืื ืืชืฉืืืืช ืืืืช ืืืืขืืืช ืืืืง ืืจืืฉืื ืฉื ืึพSpeaking โ ืชืืืืืื, ืืฉืคืื, ืขืืืื, ืืืืืืื.
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