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