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