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