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