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