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