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