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