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