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