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