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