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