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