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