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