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