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