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