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