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