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