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