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