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