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