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