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