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