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