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