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