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