Your goal is to find the secret four-color code. The following colors are possible: purple, white, red, yellow, brown, black.
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', 'yellow', 'red', 'purple']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
Guess: ['purple', 'purple', 'red', 'white']. Hint: one color is in the correct position and one color is in the secret code but in the wrong position.
Guess: ['purple', 'purple', 'purple', 'brown']. Hint: none of the guessed colors are present in the secret code.
Guess: ['white', 'yellow', 'red', 'black']. 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
black, white, red, yellow purple, red, brown, purple black, brown, red, yellow red, brown, white, black