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