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