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