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