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