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