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