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