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