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