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