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