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