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