 class pattern
{
public static void main(String args[])
{int i,j,l;
for(i=1;i<=4;i++)
{
for(j=1;j<i;j++)
{
System.out.print(" ");
}
for(j=1;j<=5-i;j++)
{
System.out.print((char)(j+64));
}
for(l=68-i;l>=65;l--)
{
System.out.print((char)(l));
}
System.out.print("\n");
}
}
}



