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