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