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