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