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