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