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