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