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