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