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