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