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