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