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