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