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