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