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