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