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