class A{public static void main(String[]args){int y=-13,x;while(++y<13){x=-13;while(++x<13){System.out.print(" "+(char)(65+(x<0?-x:x)+(y<0?-y:y))+(x==12?"\n":""));}}}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).