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