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