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