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