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