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