Your goal is to find the secret four-color code. The following colors are possible: purple, yellow, blue, green, brown, black.
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', 'brown', 'purple', 'green']. Hint: four colors are in the secret code but in the wrong positions.
Guess: ['purple', 'purple', 'purple', 'blue']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['green', 'blue', 'brown', 'purple']. 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, blue, green, purple green, brown, yellow, green blue, yellow, black, purple yellow, blue, green, blue