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