You are to print this exact text:

    A
    ABA
    ABCBA
    ABCDCBA
    ABCDEDCBA
    ABCDEFEDCBA
    ABCDEFGFEDCBA
    ABCDEFGHGFEDCBA
    ABCDEFGHIHGFEDCBA
    ABCDEFGHIJIHGFEDCBA
    ABCDEFGHIJKJIHGFEDCBA
    ABCDEFGHIJKLKJIHGFEDCBA
    ABCDEFGHIJKLMLKJIHGFEDCBA
    ABCDEFGHIJKLMNMLKJIHGFEDCBA
    ABCDEFGHIJKLMNONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWXWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWXYXWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWXYZYXWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWXYXWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWXWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVWVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUVUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTUTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSTSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRSRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQRQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPQPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNOPONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNONMLKJIHGFEDCBA
    ABCDEFGHIJKLMNMLKJIHGFEDCBA
    ABCDEFGHIJKLMLKJIHGFEDCBA
    ABCDEFGHIJKLKJIHGFEDCBA
    ABCDEFGHIJKJIHGFEDCBA
    ABCDEFGHIJIHGFEDCBA
    ABCDEFGHIHGFEDCBA
    ABCDEFGHGFEDCBA
    ABCDEFGFEDCBA
    ABCDEFEDCBA
    ABCDEDCBA
    ABCDCBA
    ABCBA
    ABA
    A

# Specs

- Extra trailing newlines are allowed at the end of the output.
- Extra trailing spaces (U+0020) are allowed at the end of each line, including the extra trailing newlines.
- You can use all lowercase instead of all uppercase, but you cannot print partially lowercase partially uppercase.
- You can return the text as a function output instead of printing it in a full program.

# Scoring

Since this is a triangle, and a triangle has 3 sides, and 3 is a small number, your code should be small in terms of byte-count.