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