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