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