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