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