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