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