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