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