18-11= 14+2= 17-11= 18-6= 16-11= 15-11= 17+2= 9-7= 14-11= 17-6= 12-11= 11-11= 8+7= 9+1= 11+1= 16+1= 17+1= 1+2= 5+8= 5+1= 5-2= 7-1= 3+9= 5+5= 17-2= 6+2= 19-3= 6-4= 19-2= 7+2= 13-1= 10-9= 8+2= 19-16= 7-2= 15-13= 15-2= 9+2= 10-1= 2-2= 10+2= 14-10= 11+2= 7+8= 16+2= 2+7= 16-16= 6+8= 1+3= 1+9= 10+8= 14-13= 2+3= 3+3= 10+1= 13-11= 4+3= 18-14= 17-12= 14-14= 14-1= 15-3= 6-5= 11+3= 8-6= 13+3= 3+2= 18-10= 14+3= 16+3= 18-18= 1+4= 2+4= 19-13= 3+4= 5+4= 14-12= 7-6= 6+4= 7+4= 10-7= 8+4= 7+9= 19-14= 6+3= 本文来源:https://www.wddqw.com/doc/1a04ff3aba1aa8114531d90d.html