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