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