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