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