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