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