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