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