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