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