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