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