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