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