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