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