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