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