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