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