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