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