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