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