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