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