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