Your goal is to find the secret four-color code. The following colors are possible: red, purple, pink, blue, 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: ['red', 'green', 'purple', 'brown']. Hint: three colors are in the correct positions.
Guess: ['red', '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: ['red', 'purple', 'blue', '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
red, blue, purple, brown red, blue, pink, brown purple, blue, brown, green purple, pink, green, blue