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