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