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