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