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