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