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