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