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