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