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