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