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