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