for(a=[o=''],j=i=0;j<10;o+=' '+a[i],++i%33||(print(o),o=''))for(n=a[i]||[18,15,7,8,14,4,10,1,9][j++],z=n*n;z--;)a[i+(z/n|0)*33+z%n]='@abcdefghi'[j]