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