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