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