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