Your goal is to find the secret four-color code. The following colors are possible: brown, blue, purple, yellow, black, red.
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: ['brown', 'blue', 'black', 'red']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['blue', 'purple', 'brown', 'blue']. Hint: two colors are in the correct positions.
Guess: ['blue', 'yellow', 'brown', 'black']. Hint: two colors are in the secret code but in the wrong positions.
A B C D
black, purple, red, blue black, red, purple, yellow brown, purple, purple, yellow blue, red, red, brown