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