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