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