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