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