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