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