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