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