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