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