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