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