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