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