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