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