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: ['yellow', 'green', 'brown', 'black']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['purple', 'purple', 'yellow', 'green']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['green', 'yellow', 'black', 'red']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
Guess: ['black', 'yellow', 'purple', 'red']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
A B C D
green, black, purple, red red, yellow, purple, purple green, red, black, black green, black, red, yellow