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