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