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