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