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