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