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