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