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