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