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