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