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