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