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