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