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