= 14+6= 13+4= 12-7= 10+7= 14+5= 9+5= 12+4= 5+9= 14-6= 15+2= 9+4= 7+9= 20-4= 14-3= 4+6= 20-5= 12-9= 6+2= 17+3= 19-6= 2+14= 20-8= 4+10= 7+2= 9-5= 20-14= 17-3= 5+6= 1+2= 4+12= 3+1= 9+7= 12-5= 3+11= 1+8= 4+12= 6-3= 14-13= 9+6= 17-3= 10+3= 19-11= 19-1= 10-7= 20-4= 10+2= 7+12= 15-11= 16-12= 8+3= 18-16= 3+15= 19-15= 9+7= 11-10= 13-2= 15-11= 17+1= 14-8= 1+18= 9+2= 1+14= 17-7= 18-17= 2-1= 5+12= 14-6= 17-12= 5+9= 12+4= 7+1= 10-5= 6+12= 18-15= 9+3= 11-9= 7+12= 12+5= 9+2= 4+14= 20-8= 5+10= 14-11= 16-7= 7+1= 2+6= 11-9= 13-2= 14-6= 14+3= 19-8= 18-8= 3+8= 14-1= 16+2= 17+2= 20-17= 7+13= 7-6= 15-9= 10+10= 18-15= 6-2= 3+14= 18-11= 2+3= 15-13= 19-16= 13-8= 5+9= 19-10= 11-2= 3-2= 6-1= 10-8= 16-14= 11-10= 5+1= 15-3= 20-10= 17-5= 6+13= 2+7= 14-3= 5+5= 3+11= 3+13= 17-11= 17-1= 18-6= 19-2= 15+3= 15-6= 14-8= 14-9=