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