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