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