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