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