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