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