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