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