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