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