Pattern 176

 #include<iostream.h>
 
 #include<math.h>
 int main()
 {
 int size=3;  //limit
 int i,j;
 
 for(i=size;i>=-size;i--){
 for(j=size;j>=abs(i);j--)
 {
 cout<<char(j+65); //65->ASCII of 'A'
 }
 cout<<endl;
 }
 return 0;
 }

   class PatternProg
   {
     public static void main(String args[])
     {
     int size = 3; //limit
     int i;
     int j;
      
     for (i = size;i >= -size;i--)
     {
     for (j = size;j >= Math.abs(i);j--)
     {
     System.out.print((char)(j + 65));
     }
     System.out.print("\n");
     }
      
     }
 }

using System;

class PatternProg
{
  public static void Main()
  {
    int size = 3; //limit

    for (int i = size; i >= -size; i--)
    {
      for (int j = size; j >= Math.Abs(i); j--)
      {
        Console.Write((char)(j + 65));
      }
      Console.WriteLine();
    }
    Console.ReadKey(true);
  }
}

size = 3
for x in range(size, -(size + 1), -1):
    for y in range(size, abs(x) - 1, -1):
        print(chr(y + 65), end="")
    print()