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