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