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