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