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