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