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