1+2= 3+2= 1+3= 4+1= 2+2= 3+1= 1+4= 2+1= 1+1= 2+3= 1+2= 3+2= 1+3= 4+1= 2+2= 3+1= 1+4= 2+1= 1+1= 2+3= 1+2= 3+2= 1+3= 4+1= 2+2= 3+1= 1+4= 2+1= 1+1= 2+3= 1+2= 3+2= 1+3= 4+1= 2+2= 3+1= 1+4= 2+1= 1+1= 2+3= 1+2= 3+2= 1+3= 4+1= 2+2= 3+1= 1+4= 2+1= 1+1= 2+3= 1+2= 3+2= 1+3= 4+1= 2+2= 3+1= 1+4= 2+1= 1+1= 2+3=