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