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