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