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