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