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