On the Subject of Unown Cipher

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This module has 5 Unown letters you can change using the up and down arrows, 4 stat values at the bottom, and a “SUBMIT” button at the top. To solve the module, submit the correct sequence of 5 Unown letters. If an incorrect sequence is entered, a strike will be recorded.

Clicking on an Unown letter shows 4 stats at the bottom. Use these numbers to decrypt the letter. Consider the 5×4 matrix X whose ith row is the vector of the four stats for the ith Unown symbol. Then, compute the following expression:

This will compute a row vector of integers. Convert each to a letter based on its position in the alphabet (A=0, B=1, ..., Z=25) to determine the solution letters.

List of Unown Letters:

A A H H O O V V
B B I I P P W W
C C J J Q Q X X
D D K K R R Y Y
E E L L S S Z Z
F F M M T T ? ?
G G N N U U ! !