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