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