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