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