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