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