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