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