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