9+2 8+3 7+4 6+5 5+6 4+7 3+8 2+9 =11 =11 =11 =11 =11 =11 =11 =11 9+3 8+4 7+5 6+6 5+7 4+8 3+9 =12 =12 =12 =12 =12 =12 =12 9+4 8+5 7+6 6+7 5+8 4+9 =13 =13 =13 =13 =13 =13 9+5 8+6 7+7 6+8 5+9 =14 =14 =14 =14 =14 9+6 8+7 7+8 6+9 =15 =15 =15 =15 9+7 8+8 7+9 =16 =16 =16 9+8 8+9 =17 =17 9+9 =18 11-9 11-8 11-7 11-6 11-5 11-4 11-3 11-2 =2 =3 =4 =5 =6 =7 =8 =9 12-9 12-8 12-7 12-6 12-5 12-4 12-3 =3 =4 =5 =6 =7 =8 =9 13-9 13-8 13-7 13-6 13-5 13-4 =4 =5 =6 =7 =8 =9 14-9 14-8 14-7 14-6 14-5 =5 =6 =7 =8 =9 15-9 15-8 15-7 15-6 =6 =7 =8 =9 16-9 16-8 16-7 =7 =8 =9 17-9 17-8 =8 =9 18-9 =9 本文来源：https://www.wddqw.com/doc/68eecf8ecf2f0066f5335a8102d276a201296013.html