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