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