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