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