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