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