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