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