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