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