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