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