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