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