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