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