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