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