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