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