Your goal is to find the secret four-color code. The following colors are possible: yellow, red, blue, brown, black, purple.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['red', 'blue', 'yellow', 'brown']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['yellow', 'yellow', 'black', 'red']. Hint: three colors are in the correct positions.
Guess: ['brown', 'yellow', 'black', 'red']. Hint: three colors are in the correct positions.
A B C D
brown, brown, purple, red purple, purple, brown, black blue, yellow, black, red blue, brown, brown, red