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