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