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• 2?????????????????????
• 3???:????????????????
• 4????????????:???????
• 5???????4???????????????
• 6?????????????????????
• 7?????????????????????
• 8??????????????????
• 9???????????????????
• 10????????????????or??????
• 11?????????????:????????
• 12??????????!??????????40?
• 13??????6.6???????10??
• 14??????????????????
• 15??????????!??????????40?
• 16?????????????????????
• 17??????????????????
• 18????????????:?????????
• 19??2???????0.8%??????
• 20??:??????????