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