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