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