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