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