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