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