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