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