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